Решите уравнение: 1 2/3x+5/6x=2 1/2+7/12-4 1/4

Решите задачу:

$1 \frac{2}{3}x+ \frac{5}{6}x=2 \frac{1}{2}+ \frac{7}{12}-4 \frac{1}{4}$
$1 \frac{4}{6}x+ \frac{5}{6}x=2 \frac{6}{12}+ \frac{7}{12}-4 \frac{3}{12}$
$1 \frac{9}{6}x=2 \frac{13}{12}-4 \frac{3}{12}$
$1 \frac{9}{6}x=-2 \frac{10}{12}$
$1 \frac{9}{6}x=-2 \frac{5}{6}$
$x=-2 \frac{5}{6}:1 \frac{9}{6}$
$x=- \frac{17}{6}: \frac{15}{6}$
$x=- \frac{17}{6}* \frac{6}{15}$
$x=- \frac{17}{15}$
$x=- 1\frac{2}{15}$