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1:2x+7=8檢驗:2x0.5+7=8 解2x+7-7=8-7 x=0.5 2:3x=4檢驗:3x3分之4=4 x=4處以3 x=3分之4
先移項:-0.2X=0.9-0.5然後化簡-0.2X=0.4然後兩邊同時除以-0.2解得X=-2
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