(6-x)-(4-2x) 2(m+4n)-7(2m-n)

Question

(6-x)-(4-2x) 2(m+4n)-7(2m-n)

Answer 1

(6-x)-(4-2x) = 6-x-4+2x = 2+x

2(m+4n)-7(2m-n) = 2m+2n-14m+7n = -12m+9n

Answer 2

Вот решение.заране пажалуйста

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