Предмет: Математика, автор: Аноним

Раскрой скобки и упрости выражение:
−7(4−a)+4(−3a−3)−7(−9+a).

Ответы

Автор ответа: NataNatalinka

Ответ:

23-12а

Пошаговое объяснение:

=-7*4-7*(-а)+4*(-3а)+4*(-3)-7*(-9)-7*а = -28+7а-12а-12+63-7а = 23-12а

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Раскрой скобки и упрости выражение: −7(4−a)+4(−3a−3)−7(−9+a).

Ответы

Раскрой скобки и упрости выражение:
−7(4−a)+4(−3a−3)−7(−9+a).