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(1)518×14×90%4÷85-40%(58+56)(2)85x-120%=5.23x+90%×4=9x-20%x=8.
题目详情
(1)
×
×90%
4÷
-40%
(
+
)
(2)
x-120%=5.2
3x+90%×4=9
x-20%x=8.
×
×90%
4÷
-40%
(
+
)
(2)
x-120%=5.2
3x+90%×4=9
x-20%x=8.
5 5 18 18
1 1 4 4
-40%
(
+
)
(2)
x-120%=5.2
3x+90%×4=9
x-20%x=8.
8 8 5 5
+
)
(2)
x-120%=5.2
3x+90%×4=9
x-20%x=8.
5 5 8 8
5 5 6 6
x-120%=5.2
3x+90%×4=9
x-20%x=8.
8 8 5 5
5 |
18 |
1 |
4 |
4÷
8 |
5 |
(
5 |
8 |
5 |
6 |
(2)
8 |
5 |
3x+90%×4=9
x-20%x=8.
5 |
18 |
1 |
4 |
4÷
8 |
5 |
(
5 |
8 |
5 |
6 |
(2)
8 |
5 |
3x+90%×4=9
x-20%x=8.
5 |
18 |
1 |
4 |
8 |
5 |
(
5 |
8 |
5 |
6 |
(2)
8 |
5 |
3x+90%×4=9
x-20%x=8.
8 |
5 |
5 |
8 |
5 |
6 |
(2)
8 |
5 |
3x+90%×4=9
x-20%x=8.
5 |
8 |
5 |
6 |
8 |
5 |
3x+90%×4=9
x-20%x=8.
8 |
5 |
▼优质解答
答案和解析
(1)
×
×90%,
=
×
×
,
=
;
4÷
-40%,
=4×
-
,
=
-
,
=
;
+
=
;
(2)
x-120%=5.2,
x-1.2=5.2,
x-1.2+1.2=5.2+1.2,
x=6.4,
x×
=6.4×
,
x=4;
3x+90%×4=9,
3x+3.6=9,
3x+3.6-3.6=9-3.6,
3x=5.4,
3x÷3=5.4÷3,
x=1.8;
x-20%x=8,
0.8x=8,
0.8x÷0.8=8÷0.8,
x=10.
5 5 518 18 18×
1 1 14 4 4×90%,
=
×
×
,
=
;
4÷
-40%,
=4×
-
,
=
-
,
=
;
+
=
;
(2)
x-120%=5.2,
x-1.2=5.2,
x-1.2+1.2=5.2+1.2,
x=6.4,
x×
=6.4×
,
x=4;
3x+90%×4=9,
3x+3.6=9,
3x+3.6-3.6=9-3.6,
3x=5.4,
3x÷3=5.4÷3,
x=1.8;
x-20%x=8,
0.8x=8,
0.8x÷0.8=8÷0.8,
x=10.
5 5 518 18 18×
1 1 14 4 4×
,
=
;
4÷
-40%,
=4×
-
,
=
-
,
=
;
+
=
;
(2)
x-120%=5.2,
x-1.2=5.2,
x-1.2+1.2=5.2+1.2,
x=6.4,
x×
=6.4×
,
x=4;
3x+90%×4=9,
3x+3.6=9,
3x+3.6-3.6=9-3.6,
3x=5.4,
3x÷3=5.4÷3,
x=1.8;
x-20%x=8,
0.8x=8,
0.8x÷0.8=8÷0.8,
x=10.
9 9 910 10 10,
=
;
4÷
-40%,
=4×
-
,
=
-
,
=
;
+
=
;
(2)
x-120%=5.2,
x-1.2=5.2,
x-1.2+1.2=5.2+1.2,
x=6.4,
x×
=6.4×
,
x=4;
3x+90%×4=9,
3x+3.6=9,
3x+3.6-3.6=9-3.6,
3x=5.4,
3x÷3=5.4÷3,
x=1.8;
x-20%x=8,
0.8x=8,
0.8x÷0.8=8÷0.8,
x=10.
1 1 116 16 16;
4÷
-40%,
=4×
-
,
=
-
,
=
;
+
=
;
(2)
x-120%=5.2,
x-1.2=5.2,
x-1.2+1.2=5.2+1.2,
x=6.4,
x×
=6.4×
,
x=4;
3x+90%×4=9,
3x+3.6=9,
3x+3.6-3.6=9-3.6,
3x=5.4,
3x÷3=5.4÷3,
x=1.8;
x-20%x=8,
0.8x=8,
0.8x÷0.8=8÷0.8,
x=10.
8 8 85 5 5-40%,
=4×
-
,
=
-
,
=
;
+
=
;
(2)
x-120%=5.2,
x-1.2=5.2,
x-1.2+1.2=5.2+1.2,
x=6.4,
x×
=6.4×
,
x=4;
3x+90%×4=9,
3x+3.6=9,
3x+3.6-3.6=9-3.6,
3x=5.4,
3x÷3=5.4÷3,
x=1.8;
x-20%x=8,
0.8x=8,
0.8x÷0.8=8÷0.8,
x=10.
5 5 58 8 8-
,
=
-
,
=
;
+
=
;
(2)
x-120%=5.2,
x-1.2=5.2,
x-1.2+1.2=5.2+1.2,
x=6.4,
x×
=6.4×
,
x=4;
3x+90%×4=9,
3x+3.6=9,
3x+3.6-3.6=9-3.6,
3x=5.4,
3x÷3=5.4÷3,
x=1.8;
x-20%x=8,
0.8x=8,
0.8x÷0.8=8÷0.8,
x=10.
2 2 25 5 5,
=
-
,
=
;
+
=
;
(2)
x-120%=5.2,
x-1.2=5.2,
x-1.2+1.2=5.2+1.2,
x=6.4,
x×
=6.4×
,
x=4;
3x+90%×4=9,
3x+3.6=9,
3x+3.6-3.6=9-3.6,
3x=5.4,
3x÷3=5.4÷3,
x=1.8;
x-20%x=8,
0.8x=8,
0.8x÷0.8=8÷0.8,
x=10.
5 5 52 2 2-
,
=
;
+
=
;
(2)
x-120%=5.2,
x-1.2=5.2,
x-1.2+1.2=5.2+1.2,
x=6.4,
x×
=6.4×
,
x=4;
3x+90%×4=9,
3x+3.6=9,
3x+3.6-3.6=9-3.6,
3x=5.4,
3x÷3=5.4÷3,
x=1.8;
x-20%x=8,
0.8x=8,
0.8x÷0.8=8÷0.8,
x=10.
2 2 25 5 5,
=
;
+
=
;
(2)
x-120%=5.2,
x-1.2=5.2,
x-1.2+1.2=5.2+1.2,
x=6.4,
x×
=6.4×
,
x=4;
3x+90%×4=9,
3x+3.6=9,
3x+3.6-3.6=9-3.6,
3x=5.4,
3x÷3=5.4÷3,
x=1.8;
x-20%x=8,
0.8x=8,
0.8x÷0.8=8÷0.8,
x=10.
21 21 2110 10 10;
+
=
;
(2)
x-120%=5.2,
x-1.2=5.2,
x-1.2+1.2=5.2+1.2,
x=6.4,
x×
=6.4×
,
x=4;
3x+90%×4=9,
3x+3.6=9,
3x+3.6-3.6=9-3.6,
3x=5.4,
3x÷3=5.4÷3,
x=1.8;
x-20%x=8,
0.8x=8,
0.8x÷0.8=8÷0.8,
x=10.
5 5 58 8 8+
5 5 56 6 6=
;
(2)
x-120%=5.2,
x-1.2=5.2,
x-1.2+1.2=5.2+1.2,
x=6.4,
x×
=6.4×
,
x=4;
3x+90%×4=9,
3x+3.6=9,
3x+3.6-3.6=9-3.6,
3x=5.4,
3x÷3=5.4÷3,
x=1.8;
x-20%x=8,
0.8x=8,
0.8x÷0.8=8÷0.8,
x=10.
35 35 3524 24 24;
(2)
x-120%=5.2,
x-1.2=5.2,
x-1.2+1.2=5.2+1.2,
x=6.4,
x×
=6.4×
,
x=4;
3x+90%×4=9,
3x+3.6=9,
3x+3.6-3.6=9-3.6,
3x=5.4,
3x÷3=5.4÷3,
x=1.8;
x-20%x=8,
0.8x=8,
0.8x÷0.8=8÷0.8,
x=10.
8 8 85 5 5x-120%=5.2,
x-1.2=5.2,
x-1.2+1.2=5.2+1.2,
x=6.4,
x×
=6.4×
,
x=4;
3x+90%×4=9,
3x+3.6=9,
3x+3.6-3.6=9-3.6,
3x=5.4,
3x÷3=5.4÷3,
x=1.8;
x-20%x=8,
0.8x=8,
0.8x÷0.8=8÷0.8,
x=10.
8 8 85 5 5x-1.2=5.2,
x-1.2+1.2=5.2+1.2,
x=6.4,
x×
=6.4×
,
x=4;
3x+90%×4=9,
3x+3.6=9,
3x+3.6-3.6=9-3.6,
3x=5.4,
3x÷3=5.4÷3,
x=1.8;
x-20%x=8,
0.8x=8,
0.8x÷0.8=8÷0.8,
x=10.
8 8 85 5 5x-1.2+1.2=5.2+1.2,
x=6.4,
x×
=6.4×
,
x=4;
3x+90%×4=9,
3x+3.6=9,
3x+3.6-3.6=9-3.6,
3x=5.4,
3x÷3=5.4÷3,
x=1.8;
x-20%x=8,
0.8x=8,
0.8x÷0.8=8÷0.8,
x=10.
8 8 85 5 5x=6.4,
x×
=6.4×
,
x=4;
3x+90%×4=9,
3x+3.6=9,
3x+3.6-3.6=9-3.6,
3x=5.4,
3x÷3=5.4÷3,
x=1.8;
x-20%x=8,
0.8x=8,
0.8x÷0.8=8÷0.8,
x=10.
8 8 85 5 5x×
=6.4×
,
x=4;
3x+90%×4=9,
3x+3.6=9,
3x+3.6-3.6=9-3.6,
3x=5.4,
3x÷3=5.4÷3,
x=1.8;
x-20%x=8,
0.8x=8,
0.8x÷0.8=8÷0.8,
x=10.
5 5 58 8 8=6.4×
,
x=4;
3x+90%×4=9,
3x+3.6=9,
3x+3.6-3.6=9-3.6,
3x=5.4,
3x÷3=5.4÷3,
x=1.8;
x-20%x=8,
0.8x=8,
0.8x÷0.8=8÷0.8,
x=10.
5 5 58 8 8,
x=4;
3x+90%×4=9,
3x+3.6=9,
3x+3.6-3.6=9-3.6,
3x=5.4,
3x÷3=5.4÷3,
x=1.8;
x-20%x=8,
0.8x=8,
0.8x÷0.8=8÷0.8,
x=10.
5 |
18 |
1 |
4 |
=
5 |
18 |
1 |
4 |
9 |
10 |
=
1 |
16 |
4÷
8 |
5 |
=4×
5 |
8 |
2 |
5 |
=
5 |
2 |
2 |
5 |
=
21 |
10 |
5 |
8 |
5 |
6 |
35 |
24 |
(2)
8 |
5 |
8 |
5 |
8 |
5 |
8 |
5 |
8 |
5 |
5 |
8 |
5 |
8 |
x=4;
3x+90%×4=9,
3x+3.6=9,
3x+3.6-3.6=9-3.6,
3x=5.4,
3x÷3=5.4÷3,
x=1.8;
x-20%x=8,
0.8x=8,
0.8x÷0.8=8÷0.8,
x=10.
5 |
18 |
1 |
4 |
=
5 |
18 |
1 |
4 |
9 |
10 |
=
1 |
16 |
4÷
8 |
5 |
=4×
5 |
8 |
2 |
5 |
=
5 |
2 |
2 |
5 |
=
21 |
10 |
5 |
8 |
5 |
6 |
35 |
24 |
(2)
8 |
5 |
8 |
5 |
8 |
5 |
8 |
5 |
8 |
5 |
5 |
8 |
5 |
8 |
x=4;
3x+90%×4=9,
3x+3.6=9,
3x+3.6-3.6=9-3.6,
3x=5.4,
3x÷3=5.4÷3,
x=1.8;
x-20%x=8,
0.8x=8,
0.8x÷0.8=8÷0.8,
x=10.
5 |
18 |
1 |
4 |
9 |
10 |
=
1 |
16 |
4÷
8 |
5 |
=4×
5 |
8 |
2 |
5 |
=
5 |
2 |
2 |
5 |
=
21 |
10 |
5 |
8 |
5 |
6 |
35 |
24 |
(2)
8 |
5 |
8 |
5 |
8 |
5 |
8 |
5 |
8 |
5 |
5 |
8 |
5 |
8 |
x=4;
3x+90%×4=9,
3x+3.6=9,
3x+3.6-3.6=9-3.6,
3x=5.4,
3x÷3=5.4÷3,
x=1.8;
x-20%x=8,
0.8x=8,
0.8x÷0.8=8÷0.8,
x=10.
9 |
10 |
=
1 |
16 |
4÷
8 |
5 |
=4×
5 |
8 |
2 |
5 |
=
5 |
2 |
2 |
5 |
=
21 |
10 |
5 |
8 |
5 |
6 |
35 |
24 |
(2)
8 |
5 |
8 |
5 |
8 |
5 |
8 |
5 |
8 |
5 |
5 |
8 |
5 |
8 |
x=4;
3x+90%×4=9,
3x+3.6=9,
3x+3.6-3.6=9-3.6,
3x=5.4,
3x÷3=5.4÷3,
x=1.8;
x-20%x=8,
0.8x=8,
0.8x÷0.8=8÷0.8,
x=10.
1 |
16 |
4÷
8 |
5 |
=4×
5 |
8 |
2 |
5 |
=
5 |
2 |
2 |
5 |
=
21 |
10 |
5 |
8 |
5 |
6 |
35 |
24 |
(2)
8 |
5 |
8 |
5 |
8 |
5 |
8 |
5 |
8 |
5 |
5 |
8 |
5 |
8 |
x=4;
3x+90%×4=9,
3x+3.6=9,
3x+3.6-3.6=9-3.6,
3x=5.4,
3x÷3=5.4÷3,
x=1.8;
x-20%x=8,
0.8x=8,
0.8x÷0.8=8÷0.8,
x=10.
8 |
5 |
=4×
5 |
8 |
2 |
5 |
=
5 |
2 |
2 |
5 |
=
21 |
10 |
5 |
8 |
5 |
6 |
35 |
24 |
(2)
8 |
5 |
8 |
5 |
8 |
5 |
8 |
5 |
8 |
5 |
5 |
8 |
5 |
8 |
x=4;
3x+90%×4=9,
3x+3.6=9,
3x+3.6-3.6=9-3.6,
3x=5.4,
3x÷3=5.4÷3,
x=1.8;
x-20%x=8,
0.8x=8,
0.8x÷0.8=8÷0.8,
x=10.
5 |
8 |
2 |
5 |
=
5 |
2 |
2 |
5 |
=
21 |
10 |
5 |
8 |
5 |
6 |
35 |
24 |
(2)
8 |
5 |
8 |
5 |
8 |
5 |
8 |
5 |
8 |
5 |
5 |
8 |
5 |
8 |
x=4;
3x+90%×4=9,
3x+3.6=9,
3x+3.6-3.6=9-3.6,
3x=5.4,
3x÷3=5.4÷3,
x=1.8;
x-20%x=8,
0.8x=8,
0.8x÷0.8=8÷0.8,
x=10.
2 |
5 |
=
5 |
2 |
2 |
5 |
=
21 |
10 |
5 |
8 |
5 |
6 |
35 |
24 |
(2)
8 |
5 |
8 |
5 |
8 |
5 |
8 |
5 |
8 |
5 |
5 |
8 |
5 |
8 |
x=4;
3x+90%×4=9,
3x+3.6=9,
3x+3.6-3.6=9-3.6,
3x=5.4,
3x÷3=5.4÷3,
x=1.8;
x-20%x=8,
0.8x=8,
0.8x÷0.8=8÷0.8,
x=10.
5 |
2 |
2 |
5 |
=
21 |
10 |
5 |
8 |
5 |
6 |
35 |
24 |
(2)
8 |
5 |
8 |
5 |
8 |
5 |
8 |
5 |
8 |
5 |
5 |
8 |
5 |
8 |
x=4;
3x+90%×4=9,
3x+3.6=9,
3x+3.6-3.6=9-3.6,
3x=5.4,
3x÷3=5.4÷3,
x=1.8;
x-20%x=8,
0.8x=8,
0.8x÷0.8=8÷0.8,
x=10.
2 |
5 |
=
21 |
10 |
5 |
8 |
5 |
6 |
35 |
24 |
(2)
8 |
5 |
8 |
5 |
8 |
5 |
8 |
5 |
8 |
5 |
5 |
8 |
5 |
8 |
x=4;
3x+90%×4=9,
3x+3.6=9,
3x+3.6-3.6=9-3.6,
3x=5.4,
3x÷3=5.4÷3,
x=1.8;
x-20%x=8,
0.8x=8,
0.8x÷0.8=8÷0.8,
x=10.
21 |
10 |
5 |
8 |
5 |
6 |
35 |
24 |
(2)
8 |
5 |
8 |
5 |
8 |
5 |
8 |
5 |
8 |
5 |
5 |
8 |
5 |
8 |
x=4;
3x+90%×4=9,
3x+3.6=9,
3x+3.6-3.6=9-3.6,
3x=5.4,
3x÷3=5.4÷3,
x=1.8;
x-20%x=8,
0.8x=8,
0.8x÷0.8=8÷0.8,
x=10.
5 |
8 |
5 |
6 |
35 |
24 |
(2)
8 |
5 |
8 |
5 |
8 |
5 |
8 |
5 |
8 |
5 |
5 |
8 |
5 |
8 |
x=4;
3x+90%×4=9,
3x+3.6=9,
3x+3.6-3.6=9-3.6,
3x=5.4,
3x÷3=5.4÷3,
x=1.8;
x-20%x=8,
0.8x=8,
0.8x÷0.8=8÷0.8,
x=10.
35 |
24 |
(2)
8 |
5 |
8 |
5 |
8 |
5 |
8 |
5 |
8 |
5 |
5 |
8 |
5 |
8 |
x=4;
3x+90%×4=9,
3x+3.6=9,
3x+3.6-3.6=9-3.6,
3x=5.4,
3x÷3=5.4÷3,
x=1.8;
x-20%x=8,
0.8x=8,
0.8x÷0.8=8÷0.8,
x=10.
8 |
5 |
8 |
5 |
8 |
5 |
8 |
5 |
8 |
5 |
5 |
8 |
5 |
8 |
x=4;
3x+90%×4=9,
3x+3.6=9,
3x+3.6-3.6=9-3.6,
3x=5.4,
3x÷3=5.4÷3,
x=1.8;
x-20%x=8,
0.8x=8,
0.8x÷0.8=8÷0.8,
x=10.
8 |
5 |
8 |
5 |
8 |
5 |
8 |
5 |
5 |
8 |
5 |
8 |
x=4;
3x+90%×4=9,
3x+3.6=9,
3x+3.6-3.6=9-3.6,
3x=5.4,
3x÷3=5.4÷3,
x=1.8;
x-20%x=8,
0.8x=8,
0.8x÷0.8=8÷0.8,
x=10.
8 |
5 |
8 |
5 |
8 |
5 |
5 |
8 |
5 |
8 |
x=4;
3x+90%×4=9,
3x+3.6=9,
3x+3.6-3.6=9-3.6,
3x=5.4,
3x÷3=5.4÷3,
x=1.8;
x-20%x=8,
0.8x=8,
0.8x÷0.8=8÷0.8,
x=10.
8 |
5 |
8 |
5 |
5 |
8 |
5 |
8 |
x=4;
3x+90%×4=9,
3x+3.6=9,
3x+3.6-3.6=9-3.6,
3x=5.4,
3x÷3=5.4÷3,
x=1.8;
x-20%x=8,
0.8x=8,
0.8x÷0.8=8÷0.8,
x=10.
8 |
5 |
5 |
8 |
5 |
8 |
x=4;
3x+90%×4=9,
3x+3.6=9,
3x+3.6-3.6=9-3.6,
3x=5.4,
3x÷3=5.4÷3,
x=1.8;
x-20%x=8,
0.8x=8,
0.8x÷0.8=8÷0.8,
x=10.
5 |
8 |
5 |
8 |
x=4;
3x+90%×4=9,
3x+3.6=9,
3x+3.6-3.6=9-3.6,
3x=5.4,
3x÷3=5.4÷3,
x=1.8;
x-20%x=8,
0.8x=8,
0.8x÷0.8=8÷0.8,
x=10.
5 |
8 |
x=4;
3x+90%×4=9,
3x+3.6=9,
3x+3.6-3.6=9-3.6,
3x=5.4,
3x÷3=5.4÷3,
x=1.8;
x-20%x=8,
0.8x=8,
0.8x÷0.8=8÷0.8,
x=10.
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