5х-4=2
5х=6
х=1,2
-12х+31=3-4х
-12х+4х=3-31
-8х=-28
х=3,5
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5х=4+2
5х=6
х=6 : 5
х= 1.2
-12х+31=3-4х
-12х+4х=3-31
-8х=-28
х= -28 : (-8)
х= 3.5
Verified answer
5х-4=2
5х=6
х=1,2
-12х+31=3-4х
-12х+4х=3-31
-8х=-28
х=3,5