Предмет: Математика, автор: djoldasbekalisher

3. а) Раскройте скобки и приведите подобные слагаемые: 7(x-2y) - 2(2x+y) - 3x

Ответы

Автор ответа: bober6574

1

Ответ:

7(x-2y) - 2(2x+y) - 3x

7x - 14y - 4x - 2y - 3x

(7x - 4x - 3x) + (-14y - 2y)

0x - 16y

-16y

Автор ответа: trjtyitukiyj

1

Ответ:

16y.

Пошаговое объяснение:

Раскроем скобки:

7x−14y−4x−2y−3x

Сгруппируем подобные слагаемые:

(7x−4x−3x)+(−14y−2y)

Выполним операции в каждой из групп:

0x−16y

Таким образом, выражение

7(x−2y)−2(2x+y)−3x после раскрытия скобок и сведения подобных слагаемых равно −16y.

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