2(x+4)-3(5-2x)=12(x+1)+5解答
4个回答
2(x+4)-3(5-2x)=12(x+1)+5
2x+8-15+6x=12x+12+5
2x+6x-12x=12+5+15-8
-4x=24
x=24÷(-4)
x=-6
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