Предмет: Математика, автор: Аноним

найди корень каждого из этих уравнений :
(30+х)+15=60 60-х=30+15
30-15=60-х 60-15=х+30
60-30=х+15
60-15=30-х

Ответы

Автор ответа: violetta85

0

30+х=60-15
30+х=45
х=45-30
х=15

Автор ответа: violetta85

0

30-15=60-х

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