Ответ:
4х+5=2х-7
4х-2х=-7-5
2х=-12
х=-6
5х-7=13
5х=13+7
5х=20
х=4
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Ответ:
4х+5=2х-7
4х-2х=-7-5
2х=-12
х=-6
5х-7=13
5х=13+7
5х=20
х=4