7х-2=3х+6
7х-3х=6+2
4х=8
х=8:4
х=2
7*2-2=3*2+6
14-2=6+6
12=12
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7х-2=3х+6
7х-3х=6+2
4х=8
х=8:4
х=2
7*2-2=3*2+6
14-2=6+6
12=12
7*2-2=12
3*2+6=12