1) 4(х + 2) = 3 2) 5(х + 5) = - 7 3) 5(х + 9) = 9
4х + 8 = 3 5х + 25 = - 7 5х + 45 = 9
4х = 3 - 8 5х = - 7 - 25 5х = 9 - 45
4х = - 5 5х = - 32 5х = - 36
х = - 5 : 4 х = - 32 : 5 х = - 36 : 5
х = - 1,25 х = - 6,4 х = - 7,2
4) 7(х - 1) = 3х 5) 9(х + 7) = - х 6) 5(х - 3) = 4х
7х - 7 = 3х 9х + 63 = - х 5х - 15 = 4х
7х - 3х = 7 9х + х = - 63 5х - 4х = 15
4х = 7 10х = - 63 х = 15
х = 7 : 4 х = - 63 : 10
х = 1,75 х = - 6,3
7) 4 (х + 6) = х 8) 7(- 3 + 2х) = - 6х - 1 9) 2(7 + 9х) = - 6х + 2
4х + 24 = х - 21 + 14х = - 6х - 1 14 + 18х = - 6х + 2
4х - х = - 24 14х + 6х = - 1 + 21 18х + 6х = 2 - 14
3х = - 24 20х = 20 24х = - 12
х = - 24 : 3 х = 20 : 20 х = - 12 : 24
х = - 8 х = 1 х = - 0,5