Предмет: Алгебра, автор: busylegend2016

Значения переменных a и b таковы, что а+ b= -8 с=4 чему равно значение выражения: 1) а+b-c; 2) 0,5(a+b)+c; 3) 3ac+3bc?

Ответы

Автор ответа: irina555556

0

Ответ:

Если a+b=-8, c=4, то

1) а+b-c=-8-4=-12

2) 0,5(a+b)+c=0,5×(-8)+4=-4+4=0

3) 3ac+3bc=3c(a+b)=3×4×(-8)=12×(-8)=-96

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