Автор - Egwgwg

X+5 4x
-------- = --------
3 7

Ответ

Автор - platon1108

Здравствуйте!

Ответ:

x=7

Объяснение:

 frac{x + 5}{3}  =  frac{4x}{7}  | times 21 \  \  frac{21(x + 5)}{3}  =  frac{21 times 4x}{7}  \  \ 7(x + 5) = 3 times 4x \ \  7x + 35 = 12x \  \  35 = 12x - 7x  \  \ 5x = 35 \  \  x = 7

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