Предмет: Математика, автор: zaharcukvaleria389

найдите сумму M+N, если M-N=60 и M: N=9 (4)​

Ответы

Автор ответа: Inte1gral
0

Ответ:

75

Пошаговое объяснение:

Решим систему:

M-N=60

M/N=9

Из 2 ур-ния следует М=9N, тогда 8N = 60 и N = 7,5. Тогда M+N= 9N+ N = 10N = 75. Следовательно ответ 75.

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