Ответ: y=9 32/135
Пошаговое объяснение:
(y-5) + 7 89/90 = 14 19/90 - 2 28/270
(y-5) =6 20/90 - 2 28/270
(y-5) =6 60/270 - 2 28/270
(y-5) = 4 32/270
y=4 16/135 + 5
y=9 32/135
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Ответ: y=9 32/135
Пошаговое объяснение:
(y-5) + 7 89/90 = 14 19/90 - 2 28/270
(y-5) =6 20/90 - 2 28/270
(y-5) =6 60/270 - 2 28/270
(y-5) = 4 32/270
y=4 16/135 + 5
y=9 32/135