1.х=-21:(-3); х=7
2.х=-5/20; х=-1/4
3.8х=-5; х=-5/8
4.3х=-5; х=-5/3
5.3х=2+7; 3х=9; х=3
6.-4х-2х=11; -6х=11; х=11/6
1.х=-21:(-3); х=7
2.х=-5/20; х=-1/4
3.8х=-5; х=-5/8
4.3х=-5; х=-5/3
5.3х=2+7; 3х=9; х=3
6.-4х-2х=11; -6х=11; х=11/6