Предмет: Алгебра, автор: fegedrfgkj

Докажите, что значение выражения не зависит от y:
2,3y - 1,7 (y - 2) + 0,3 (4 - 2y).

Ответы

Автор ответа: prettypushkova
0

Раскроем скобки и приведём подобные слагаемые:

= 2,3у - 1,7у + 3,4 + 1,2 - 0,6у = (2,3у - 1,7у - 0,6у) + (3,4 + 1,2) =

= 0у + 4,6, где у - любое число, так как при умножении на 0 у равно 0.

Ответ: 0у + 4,6, где у - любое число.

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