2*(x-2)+3*(4x-1)=9*(x-1)+12
2个回答
2*(x-2)+3*(4x-1)=9*(x-1)+12
先去括号
2x-4+12x-3=9x-9+12
移项
2x+12x-9x=12-9+4+3
合并同类项
5x=10
两边同除以5
x=2
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