解方程. 4.8a-2.2a=5.2 10.4x-5.4x=75 18m+4m=88.

问题描述:

解方程.
4.8a-2.2a=5.2
10.4x-5.4x=75
18m+4m=88.

(1)4.8a-2.2a=5.2             2.6a=5.2        2.6a÷2.6=5.2÷2.6     ...