Предмет: Математика, автор: nastaaleks11

уравнение: 8 целых 9/10 - х=4 целых 5/6... пожалуйста решите!

Ответы

Автор ответа: fiofionina

Решение:
8 целых 9/10--х=4 целых 5/6
89/10-х=29/6 Приведём к общему знаменателю 30:
3*89/30-30*х/30=5*29/30
267-30х=145
-30х=145-267
-30х=-122
х=-122/30=4 целых 2/30=4целых 1/15

Ответ: х=2 целых 1/15

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