September 2018 2 21 Report

Zapisz wyrażenia, nie używając nawiasów.Zredukuj wyrazy podobne.

a) 2a-5b+(7-3a-2b)\\ b)4-14x-(2^{3}-5x+3)\\ c)-(6st+2s)+4st+2s\\ d)(3m+8n-9)+(15-5m-n)\\ e)(-4a^{3}+7a^{2}-1)-(2a^{2}+3a-1)\\ f)(-xy+5y-x)-(-xy+2x-y)


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