问题
解答题
解方程
0.36+x=1.28
x-35=75
0.36x=7.2
x÷0.25=1.
答案
(1)0.36+x=1.28,
0.36+x-0.36=1.28-0.36,
x=0.92;
(2)x-35=75,
x-35+35=75+35,
x=110;
(3)0.36x=7.2,
0.36x÷0.36=7.2÷0.36,
x=20;
(4)x÷0.25=1,
x÷0.25×0.25=1×0.25,
x=0.25.