[3X-1]/2等于【4X+2】/5-1.,求X的值?
题目
[3X-1]/2等于【4X+2】/5-1.,求X的值?
答案
两边乘以10
5(3x-1)=2(4x+2)-10
15x-5=8x+4-10
15x-8x=4-10+5
7x=-1
x=-1/7
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