Question

2/3(1/3x-1/2)=4x+2 1/2​

Answer 1

Ответ:

-3/4

Пошаговое объяснение:

2/3(1/3х - 1/2) = 4х + 2 1/2

2/9х - 2/6 = 4х + 2 1/2

2/9х - 4х = 2 1/2 + 2/6

2/9х - 3 9/9х = 2 3/6 + 2/6

-3 7/9х = 2 5/6

-34/9х = 17/6

х = 17/6 : (-34/9)

х = 17/6 * (-9/34)

х = 1/2 * (-3/2)

х = -3/4

Answer 2

$\frac{2}{3} ( \frac{1}{3} x - \frac{1}{2} ) = 4x + 2 \frac{1}{2} \\ \frac{2}{9} x - \frac{1}{3} = 4x + 2 \frac{1}{2} \\ \frac{2}{9} x - 4x = 2 \frac{1}{2} + \frac{1}{3} \\ \frac{2}{9} x - 3 \frac{9}{9} x = 2 \frac{3}{6} + \frac{2}{6} \\ - 3 \frac{7}{9} x = 2 \frac{5}{6} \\ x = \frac{17}{6} \div ( - \frac{34}{9} ) \\ x = - \frac{17 \times 9}{6 \times 34} \\ x = - \frac{3}{2 \times 2} \\ x = - \frac{3}{4} \\ x = - 0.75$