左边：3.5X-7=6(8-4X)
3.5X-7=48-24X
27.5X=55
X=2
右边：48-30+4X=9X
18=5X
X=3.6
(3.5x-7)\6=8-4x 48-(7.5-x)*4=9x
1个回答
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