计算2x-2[2(x+3y)-3(x-2y)]
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计算2x-2[2(x+3y)-3(x-2y)]计算2x-2[2(x+3y)-3(x-2y)]计算2x-2[2(x+3y)-3(x-2y)]原式=2x-2(2x+6y-3x+6y)=2x-2(-x+12
计算2x-2[2(x+3y)-3(x-2y)]
计算2x-2[2(x+3y)-3(x-2y)]
计算2x-2[2(x+3y)-3(x-2y)]
原式
=2x-2(2x+6y-3x+6y)
=2x-2(-x+12y)
=2x+2x-24y
=4x-24y
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