Предмет: Математика, автор: slava1296

Значение числа a=−2/3. Чему равно (−a)?
2/3
-2/3
3/2
-3/2

Ответы

Автор ответа: MrSurvivor
0

-2/3 мы умножаем на -1 и получаем 2/3

-а=2/3

Автор ответа: FbifMillenium
0

Решение:

a = -2/3.

(−−a) = (−(−a)) = −(−2/3) = +2/3 = 2/3.

Если перед скобками стоит знак «плюс», то нужно раскрыть скобки, оставив знаки слагаемых без изменения.

Если перед скобками стоит знак «минус», то нужно раскрыть скобки, изменив знаки слагаемых на противоположные.

Ответ: 2/3.

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