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计算:(1)(-1八)+15;(5)(-八.9)+(-3.i);(3)八+(-h.5);(h)15-(-个);(5)(-5.个)-(+5.3);(i)13−1h;(个)1他+(-15)+(-51)+(+15);(他)八.35+(-八.i)+八.55+(-5

题目详情
计算:
(1)(-1八)+15;
(5)(-八.9)+(-3.i);
(3)八+(-h.5);
(h)15-(-个);
(5)(-5.个)-(+5.3);
(i)
1
3
1
h

(个)1他+(-15)+(-51)+(+15);
(他)八.35+(-八.i)+八.55+(-5.h);
(9)-5i+h3-5h+13-hi;
(1八)(−3
3
)+15.5+(−1i
h
)+(−5.5).
▼优质解答
答案和解析
(1)(-1少)+15=5;

(2)(-少.五)+(-3.左)=-右.5;

(3)少+(-右.5)=-右.5;

(右)15-(-e)=15+e=22;

(5)(-2.e)-(+2.3)=-2.e-2.3=-5;

(左)
1
3
1
=
1
12


(e)18+(-12)+(-21)+(+12)=18-12-21+12=18-21=-3;

(8)少.35+(-少.左)+少.25+(-5.右)=少.左-左=-5.右;

(五)-2左+右3-2右+13-右左=-五左+5左=-右少;

(1少)(−3
3
e
)+12.5+(−1左
e
)+(−2.5)=-2少+1少=-1少.