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求下列各题的未知数x.3x−25×34=9560÷(x+10)=538(28-2x)=6(x-5)

题目详情
求下列各题的未知数x.
3x−
2
5
×
3
4
9
5

60÷(x+10)=5           
3
8
(28-2x)=6(x-5)

3x−
2
5
×
3
4
9
5

60÷(x+10)=5           
3
8
(28-2x)=6(x-5)
2
5
2255
3
4
3344
9
5
9955

3
8
(28-2x)=6(x-5)
3
8
3388
▼优质解答
答案和解析

3x−
2
5
×
3
4
9
5

     3x-
3
10
=
9
5

  3x-
3
10
+
3
10
=
9
5
+
3
10

         3x=
21
10

      3x×
1
3
=
21
10
×
1
3

          x=
7
10

②60÷(x+10)=5
60÷(x+10)×(x+10)=5 (x+10)
                5x+50=60
             5x+50-50=60-50
                   5x=10
                5x÷5=10÷5
                    x=2
3
8
(28-2x)=6(x-5)
     
21
2
-
3
4
x=6x-30
      
21
2
+30=6x+
3
4
x
         
27
4
x=
81
2

    
27
4
4
27
=
81
2
×
4
27

           x=6
3x−
2
5
222555×
3
4
333444=
9
5
999555
     3x-
3
10
=
9
5

  3x-
3
10
+
3
10
=
9
5
+
3
10

         3x=
21
10

      3x×
1
3
=
21
10
×
1
3

          x=
7
10

②60÷(x+10)=5
60÷(x+10)×(x+10)=5 (x+10)
                5x+50=60
             5x+50-50=60-50
                   5x=10
                5x÷5=10÷5
                    x=2
3
8
(28-2x)=6(x-5)
     
21
2
-
3
4
x=6x-30
      
21
2
+30=6x+
3
4
x
         
27
4
x=
81
2

    
27
4
4
27
=
81
2
×
4
27

           x=6
3
10
333101010=
9
5

  3x-
3
10
+
3
10
=
9
5
+
3
10

         3x=
21
10

      3x×
1
3
=
21
10
×
1
3

          x=
7
10

②60÷(x+10)=5
60÷(x+10)×(x+10)=5 (x+10)
                5x+50=60
             5x+50-50=60-50
                   5x=10
                5x÷5=10÷5
                    x=2
3
8
(28-2x)=6(x-5)
     
21
2
-
3
4
x=6x-30
      
21
2
+30=6x+
3
4
x
         
27
4
x=
81
2

    
27
4
4
27
=
81
2
×
4
27

           x=6
9
5
999555
  3x-
3
10
+
3
10
=
9
5
+
3
10

         3x=
21
10

      3x×
1
3
=
21
10
×
1
3

          x=
7
10

②60÷(x+10)=5
60÷(x+10)×(x+10)=5 (x+10)
                5x+50=60
             5x+50-50=60-50
                   5x=10
                5x÷5=10÷5
                    x=2
3
8
(28-2x)=6(x-5)
     
21
2
-
3
4
x=6x-30
      
21
2
+30=6x+
3
4
x
         
27
4
x=
81
2

    
27
4
4
27
=
81
2
×
4
27

           x=6
3
10
333101010+
3
10
=
9
5
+
3
10

         3x=
21
10

      3x×
1
3
=
21
10
×
1
3

          x=
7
10

②60÷(x+10)=5
60÷(x+10)×(x+10)=5 (x+10)
                5x+50=60
             5x+50-50=60-50
                   5x=10
                5x÷5=10÷5
                    x=2
3
8
(28-2x)=6(x-5)
     
21
2
-
3
4
x=6x-30
      
21
2
+30=6x+
3
4
x
         
27
4
x=
81
2

    
27
4
4
27
=
81
2
×
4
27

           x=6
3
10
333101010=
9
5
+
3
10

         3x=
21
10

      3x×
1
3
=
21
10
×
1
3

          x=
7
10

②60÷(x+10)=5
60÷(x+10)×(x+10)=5 (x+10)
                5x+50=60
             5x+50-50=60-50
                   5x=10
                5x÷5=10÷5
                    x=2
3
8
(28-2x)=6(x-5)
     
21
2
-
3
4
x=6x-30
      
21
2
+30=6x+
3
4
x
         
27
4
x=
81
2

    
27
4
4
27
=
81
2
×
4
27

           x=6
9
5
999555+
3
10

         3x=
21
10

      3x×
1
3
=
21
10
×
1
3

          x=
7
10

②60÷(x+10)=5
60÷(x+10)×(x+10)=5 (x+10)
                5x+50=60
             5x+50-50=60-50
                   5x=10
                5x÷5=10÷5
                    x=2
3
8
(28-2x)=6(x-5)
     
21
2
-
3
4
x=6x-30
      
21
2
+30=6x+
3
4
x
         
27
4
x=
81
2

    
27
4
4
27
=
81
2
×
4
27

           x=6
3
10
333101010
         3x=
21
10

      3x×
1
3
=
21
10
×
1
3

          x=
7
10

②60÷(x+10)=5
60÷(x+10)×(x+10)=5 (x+10)
                5x+50=60
             5x+50-50=60-50
                   5x=10
                5x÷5=10÷5
                    x=2
3
8
(28-2x)=6(x-5)
     
21
2
-
3
4
x=6x-30
      
21
2
+30=6x+
3
4
x
         
27
4
x=
81
2

    
27
4
4
27
=
81
2
×
4
27

           x=6
21
10
212121101010
      3x×
1
3
=
21
10
×
1
3

          x=
7
10

②60÷(x+10)=5
60÷(x+10)×(x+10)=5 (x+10)
                5x+50=60
             5x+50-50=60-50
                   5x=10
                5x÷5=10÷5
                    x=2
3
8
(28-2x)=6(x-5)
     
21
2
-
3
4
x=6x-30
      
21
2
+30=6x+
3
4
x
         
27
4
x=
81
2

    
27
4
4
27
=
81
2
×
4
27

           x=6
1
3
111333=
21
10
×
1
3

          x=
7
10

②60÷(x+10)=5
60÷(x+10)×(x+10)=5 (x+10)
                5x+50=60
             5x+50-50=60-50
                   5x=10
                5x÷5=10÷5
                    x=2
3
8
(28-2x)=6(x-5)
     
21
2
-
3
4
x=6x-30
      
21
2
+30=6x+
3
4
x
         
27
4
x=
81
2

    
27
4
4
27
=
81
2
×
4
27

           x=6
21
10
212121101010×
1
3

          x=
7
10

②60÷(x+10)=5
60÷(x+10)×(x+10)=5 (x+10)
                5x+50=60
             5x+50-50=60-50
                   5x=10
                5x÷5=10÷5
                    x=2
3
8
(28-2x)=6(x-5)
     
21
2
-
3
4
x=6x-30
      
21
2
+30=6x+
3
4
x
         
27
4
x=
81
2

    
27
4
4
27
=
81
2
×
4
27

           x=6
1
3
111333
          x=
7
10

②60÷(x+10)=5
60÷(x+10)×(x+10)=5 (x+10)
                5x+50=60
             5x+50-50=60-50
                   5x=10
                5x÷5=10÷5
                    x=2
3
8
(28-2x)=6(x-5)
     
21
2
-
3
4
x=6x-30
      
21
2
+30=6x+
3
4
x
         
27
4
x=
81
2

    
27
4
4
27
=
81
2
×
4
27

           x=6
7
10
777101010
②60÷(x+10)=5
60÷(x+10)×(x+10)=5 (x+10)
                5x+50=60
             5x+50-50=60-50
                   5x=10
                5x÷5=10÷5
                    x=2
3
8
(28-2x)=6(x-5)
     
21
2
-
3
4
x=6x-30
      
21
2
+30=6x+
3
4
x
         
27
4
x=
81
2

    
27
4
4
27
=
81
2
×
4
27

           x=6
3
8
333888(28-2x)=6(x-5)
     
21
2
-
3
4
x=6x-30
      
21
2
+30=6x+
3
4
x
         
27
4
x=
81
2

    
27
4
4
27
=
81
2
×
4
27

           x=6
21
2
212121222-
3
4
x=6x-30
      
21
2
+30=6x+
3
4
x
         
27
4
x=
81
2

    
27
4
4
27
=
81
2
×
4
27

           x=6
3
4
333444x=6x-30
      
21
2
+30=6x+
3
4
x
         
27
4
x=
81
2

    
27
4
4
27
=
81
2
×
4
27

           x=6
21
2
212121222+30=6x+
3
4
x
         
27
4
x=
81
2

    
27
4
4
27
=
81
2
×
4
27

           x=6
3
4
333444x
         
27
4
x=
81
2

    
27
4
4
27
=
81
2
×
4
27

           x=6
27
4
272727444x=
81
2

    
27
4
4
27
=
81
2
×
4
27

           x=6
81
2
818181222
    
27
4
4
27
=
81
2
×
4
27

           x=6
27
4
272727444x×
4
27
=
81
2
×
4
27

           x=6
4
27
444272727=
81
2
×
4
27

           x=6
81
2
818181222×
4
27

           x=6
4
27
444272727
           x=6