Ответ:
4m+2m+n-n+n-2b^3+2b^3-3b^3+3b+b-6-3 =
= 6m + n - 3b^3 + 4b - 9
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Ответ:
4m+2m+n-n+n-2b^3+2b^3-3b^3+3b+b-6-3 =
= 6m + n - 3b^3 + 4b - 9
1) 6m+n
2) -3b^2+4b-6