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