Предмет: Математика, автор: анна20151976

(29+(59-y)+15) =72. решительно пожалуйста уровнение

Ответы

Автор ответа: wwwm001ag95

42

(29+(59-у)+15)=72
29+59-у+15=72
у=29+59+15-72
у=31

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