Question

Решите уравнение 6 - x/3 = x/7

Answer 1

$6- \frac{x}{3} = \frac{x}{7}$
$\frac{x}{7}+ \frac{x}{3}=6$
$\frac{3x}{21} + \frac{7x}{21}=6$
$\frac{10x}{21}=6$
$x=6*21:10$
$x=12 \frac{3}{5}$