Решите уравнения1,5(х+8)=-4х+11\6(х+9)=-1\3х3\4(х+8)=2х+1

1) 1,5 (х + 8) = - 4х + 11/6.

1.5 * х + 8 * 1,5 + 4х = 11/6,

1,5х + 4х + 12 = 11/6,

5,5х = 11/6 - 12,

5,5х = 11/6 - (12 * 6)/6,

5,5х = 11/6 - 72/6,

55/10х = (11 - 72)/6,

11/2х = - 61/6,

х = - 61/6 : 11/2,

х = - 61/6 * 2/11,

х = - 61/33,

х = - 1 28/33,

Ответ: х = - 1 28/33.

2) (х + 9) = - 1\3х.

x + 1/3x = - 9.

x (1 + 1/3) = - 9.

x (3/3 + 1/3) = - 9.

x * 4/3 = - 9.

x = - 9 : 4/3,

х = - 9 * 3/4 = - 27 : 4 = - 6,75,

Ответ: х = - 6,75,

3) 3/4 (х + 8) = 2х + 1,

3/4 * х + 8 * 3/4 - 2х = 1,

3/4х - 2х + 6 = 1,

х (3/4 - 2) = 1 - 6,

х (3/4 - (2 * 4)/4) = - 5,

х (3/4 - 8/4) = - 5,

х (3 - 8)/4 = - 5,

х * (- 5/4) = - 5,

х = 5 : 5/4,

х = 5 * 4/5 = 4,

Ответ: х = 4.