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msstoronevich
@msstoronevich
June 2022
1
11
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2. Найдите значение выражения 5a
+ 2
b
при
a
=
7/15
,
b
= –
5/6
.
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darkost
Ну просто подставляем и получаем: 5* (7/15) + 2*(-5/6) = (35/15) - (10/6) приводим к общему знаменателю "30" ---> (70-50)/30 = 20/30 = 2/3
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