Раскройте скобки,приведите подобные слагаемые.
1)(3x+y)-(-x-4y). 2)(x+6y)-(8x-7y. 3)(m+n)-(m-n)
4)(m+3)-(6m+5)-m-1) 5)(x-y)+(x-y)-(2x+y)
6)(0,2x-3)-(x-2)-(0,4x-1)
1)(3x+y)-(-x-4y). 2)(x+6y)-(8x-7y. 3)(m+n)-(m-n)
4)(m+3)-(6m+5)-m-1) 5)(x-y)+(x-y)-(2x+y)
6)(0,2x-3)-(x-2)-(0,4x-1)
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Answers & Comments
2)=х+6у-8х+7у=-7х+13у=13у-7х
3)=m+n-m+n=2n
4)=m+3-6m-5+m+1=-4m-1
5)=х-у+х-у-2х-у=-3у
6)=0,2х-3-х+2-0,4х+1=-1,2х