化简(2x-3y)-3(4x-2y) a-(2a+b)+2(a-2b) 2(x-3y)-3(4x-2y) 1-(2a-1
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化简(2x-3y)-3(4x-2y) a-(2a+b)+2(a-2b) 2(x-3y)-3(4x-2y) 1-(2a-1)-(3a+3) 2a-3b+[4a-(3a-b)]
(2x-3y)-3(4x-2y)=2x-3y-12x+6y=-10x+3y
a-(2a+b)+2(a-2b) =a-2a-b+2a-4b=a-5b
2(x-3y)-3(4x-2y)=2x-6y-12x+6y=-10x
1-(2a-1)-(3a+3) =1-2a+1-3a-3=-5a-1
2a-3b+[4a-(3a-b)]=2a-3b+4a-3a+b=3a-2b
再问: 还有一题:3-2(3y+2x)
再答: 3-2(3y+2x)=3-6y-4x
再问: 3-2(3y+2x)过程?
再答: 3-2(3y+2x)=3-(6y+4x)=3-6y-4x
a-(2a+b)+2(a-2b) =a-2a-b+2a-4b=a-5b
2(x-3y)-3(4x-2y)=2x-6y-12x+6y=-10x
1-(2a-1)-(3a+3) =1-2a+1-3a-3=-5a-1
2a-3b+[4a-(3a-b)]=2a-3b+4a-3a+b=3a-2b
再问: 还有一题:3-2(3y+2x)
再答: 3-2(3y+2x)=3-6y-4x
再问: 3-2(3y+2x)过程?
再答: 3-2(3y+2x)=3-(6y+4x)=3-6y-4x
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