Предмет: Математика, автор: Виолетта0тивт

Решите уравнения
210*х=30
210-х=-210
210+х=-90

Ответы

Автор ответа: Нубка555

0

1)…
2) 210-х=-210
-х=-210-210
-х=-420 | : (-1)
х=420
3) 210+х=-90
х=-90-210
х= -300

Автор ответа: colnechnaya4741

0

210·×=30
×=30/210
×=1/7
210-×=-210
×=1
210+×=-90
×=-300

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