Ответ:
5х-4,5=3х+2.5
5х-4,5-3х-2,5=0
2х-7=0
2х=7
х=3,5
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Ответ:
5х-4,5=3х+2.5
5х-4,5-3х-2,5=0
2х-7=0
2х=7
х=3,5