Помогите пожалуйста решить номер 1144 и 1146 1144 1) 9(x-1) = x + 15 2) (11x + 14) - (5x - 8) = 25 3) 12-4 (x-3)= 39

1) 9(x-1) = x + 15 ; 9 * x - 9 = x + 15 ; 9 * x - x = 15 + 9 ; 8 * x = 24 ; x = 24 / 8 ; x = 3 ; 2) (11x + 14) - (5x - 8) = 25 ; 11 * x + 14 - 5 * x + 8 = 25 ; 6 * x + 22 = 25 ; 6 * x = 25 - 22 ; 6 * x = 3 ; x = 3 / 6 ; x = 1 / 2 ; x = 0.5 ; 3) 12-4 (x-3)= 39 - 9x ; 12 - 4 * x + 12 = 39 - 9 * x ; 24 - 4 * x = 39 - 9 * x ; - 4 * x + 9 * x = 39 - 24 ; 5 * x = 15 ; x = 15 / 5 ; x = 3 ; 4) 2(3x + 5) - 3 (4x-1) = 11,8 ; 6 * x + 10 - 12 * x + 3 = 11.8 ; - 6 * x + 13 = 11.8 ; - 6 * x = 11.8 - 13 ; - 6 * x = - 1.2 ; x = 0.2;1148. 1) -7 (2-3x) = 56 ; 2 - 3 * x = - 8 ; - 3 * x = - 8 - 2 ; 3 * x = 10 ; x = 10 / 3 ; 2)( 5+7a ) • 15 = -30 ; 5 + 7 * a = - 2 ; 7 * a = - 2 - 5 ; 7 * a = - 7 ; a = - 1.