Предмет: Математика, автор: Narinochka240701

Решите уравнения:
5х+10=20
2х-7=17
3-1/3х=2.

Ответы

Автор ответа: lolo4884
0
5х=20-10   5х=10  х=10:5  х=2     2)2х-7=17   2х=17+7    2х=24   х=24:2  х=12         3)-1/3х=2-3  -1/3х=-1  х=- 1: (-1/3)  х=3
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