试题:
解方程
x+56=102

x-970=270

x÷0.8=1.25
x÷5=0.1213x=2x÷0.8=1.25.
解方程 2016-05-21

答案:

我来补答

(1)x+56=102,
x+56-56=102-56,
x=46;

(2)x-970=270,
x-970+970=270+970,
x=1240;

(3)x÷0.8=1.25,
x÷0.8×0.8=1.25×0.8,
x=1;

(4)x÷5=0.12,
x÷5×5=0.12×5,
x=0.6;

(5)13x=2,
13x÷13=2÷13,
x=
2
13


(6)x÷0.8=1.25,
x÷0.8×0.8=1.25×0.8,
x=1.
 
 
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