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Автор - katya10809

найдите значение выражения
2/6(5b-4a)+1/5a
при а=5 и b=6
A)42/3 B)3 1/3 C)4 1/3 D)5 2/3 E)2 1/3

Ответ

Автор - Moncart

Ответ:

C)4frac{1}{3}

Объяснение:

frac{2}{6}cdot left(5cdot 6-4cdot 5right)+frac{1}{5}cdot 5=frac{2}{6}cdot left(30-20right)+1=frac{2}{6}cdot 10+1=3frac{1}{3}+1=4frac{1}{3}  

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