Verified answer

Пошаговое объяснение:

[tex] \frac{3}{4} ( \frac{1}{2} x + \frac{2}{3} ) = 3x + 2 \frac{1}{4} \\ \frac{3}{8} x + \frac{6}{12} = 3x + \frac{9}{4} \\ \frac{3}{8} x - 3x = \frac{9}{4} - \frac{2}{4} \\ \frac{3 - 24}{8} x = \frac{7}{4} \\ - 21x = 14 \\ x = \frac{14}{ - 21} \\ x = - \frac{2}{3} [/tex]

Ответ:

-2/3

Пошаговое объяснение:

3/4(1/2х + 2/3) = 3х + 2 1/4

3/8х + 6/12 = 3х + 2 1/4

3/8х - 3х = 2 1/4 - 6/12

3/8х - 2 8/8х = 2 3/12 - 6/12

-2 5/8х = 27/12 - 6/12

-21/8х = 21/12

х = 21/12 : (-21/8)

х = 21/12 * (-8/21)

х = 1/3 * (-2/1)

х = -2/3