Предмет: Математика, автор: ahpata

Упростите выражение и найдите его значение при а = 4, b = 10

Приложения:

ahpata: СРОЧНО !!!!!

Ответы

Автор ответа: Аноним

Ответ:

-49

Пошаговое объяснение:

5/6*(3.6a-7.2b)-3.5(4/7*a-0.2b) = 5/6*3.6a-5/6*7.2b-7/2(4/7*a-1/5*b) = 5*0.6a-5*1.2b-7/2*4/7*a+7/2*1/5*b = 3a-6b-2a+7/10*b = a-6b+0.7b = a-5.3b

a-5.3b = 4-5.3*10 = 4-53 = -49

ahpata: Да)

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