Ответ:
а) 6-3(х+1)-(9-х)=6-3х-3-9+х= - 6-2х
б)2(7,5-х)-(4,3-3х)=15-2х-4,3+3х=10,7+х
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Ответ:
а) 6-3(х+1)-(9-х)=6-3х-3-9+х= - 6-2х
б)2(7,5-х)-(4,3-3х)=15-2х-4,3+3х=10,7+х