Ответ:
4х-7=0
4х =0+7
4х=7
х=7:4
х=1,75
5х-9=3
5х=3+9
5х=12
х=12:5
х=2,4
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Ответ:
4х-7=0
4х =0+7
4х=7
х=7:4
х=1,75
5х-9=3
5х=3+9
5х=12
х=12:5
х=2,4