4) 6( х + 2) = 18
6х + 12 = 18
6х = 18 - 12
6х = 6
х = 6 : 6
х = 0
5) 7(3х - 1) = - 4х + 23
21х - 7 = -4х + 23
21х + 4х = 23 + 7
25х = 30
х = 30 : 25
х = 0.3
4) 6( х + 2) = 18
6х + 12 = 18
6х = 18 - 12
6х = 6
х = 6 : 6
х = 0
5) 7(3х - 1) = - 4х + 23
21х - 7 = -4х + 23
21х + 4х = 23 + 7
25х = 30
х = 30 : 25
х = 0.3