解方程. 4.5×6+4x=41 7x-3.4x=0.72 2x+1.5x=42 (x-4.5)×6=31.8 x÷1.2=8 (x+1.7)÷3=1.4.

问题描述:

解方程.
4.5×6+4x=41  
7x-3.4x=0.72
2x+1.5x=42   (x-4.5)×6=31.8
x÷1.2=8   (x+1.7)÷3=1.4.

(1)4.5×6+4x=41,             27+4x=41,          27+4x-27=41-27,    &nb...