-7(4-b)+2(-2b-2)-7(-8+b)= -28+7b-4b-4+56-7b= 24-4b
Ответ: 24-4b.
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-7(4-b)+2(-2b-2)-7(-8+b)= -28+7b-4b-4+56-7b= 24-4b
Ответ: 24-4b.