(4x-2y)-(-(-2y-x)+(x-y))-5x 化简
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(4x-2y)-(-(-2y-x)+(x-y))-5x 化简
(4x-2y)-(-(-2y-x)+(x-y))-5x 化简
(4x-2y)-(-(-2y-x)+(x-y))-5x 化简
(4x-2y)-(-(-2y-x)+(x-y))-5x
=4x-2y-(2y+x+x-y)-5x
=4x-2y-2y-x-x+y-5x
=-3x-3y
技巧:这类的题就是要注意看清楚括号先去掉所以的括号然后合并同类项就行了.
祝你成才!
(4x-2y)-(-(-2y-x)+(x-y))-5x
=4x-2y-(2y+x+x-y)-5x
=4x-2y-2y-x-x+y-5x
=-3x-3y