问题标题:
【解方程(x-120)/70=(x-120)/90帮帮忙啊~~~~】
问题描述:
解方程(x-120)/70=(x-120)/90
帮帮忙啊~~~~
焦春来回答:
(x-120)/70=(x-120)/90
70(x-120)=90(x-120)
20(x-120)=0
x-120=0
x=120
祝学习进步,望采纳~~
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