Question

13 баллов за 1 уравнение

Answer 1

3х-12-7х=5х+6
3х-7х-5х=6+12
-4х-5х=18
-9х=18
х=-2

Answer 2

3(х-4)-7х=5х+6
3х-12-7х=5х-6
-4х-12=5х-6
4х-5х=12-6
-х=6
х=-6