(x一1.7）÷3=1.8 7x－3.4x=0.72 o.5x＋7 X 0.5=7

题目

(x一1.7）÷3=1.8 7x－3.4x=0.72 o.5x＋7 X 0.5=7
解方程

答案

(x一1.7）÷3=1.8
x-1.7=5.4
x=7.1
7x－3.4x=0.72
3.6x=0.72
x=0.2
o.5x＋7 X 0.5=7
0.5x+3.5=7
0.5x=3.5
x=7