Автор - dimasik15175

(7/12-11/30 y)÷7 1/4=1/3
найти у​

Ответ

Автор - yaninkka
(7/12-11/30 у):29/4=1/3
(7/12-11/30 у)* 4/29=1/3
7/87-22/435 у=1/3
35-22у=145
-22у=145-35
-22у=110
У=-5

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