Ответ:
3х-1=0
3х=1
х=1/3
4-2х=0
-2х=-4
х=4÷2
х=2
5х-9=0
5х=9
х=9/5
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Ответ:
3х-1=0
3х=1
х=1/3
4-2х=0
-2х=-4
х=4÷2
х=2
5х-9=0
5х=9
х=9/5