Question

Решиииитеееее задачку мне

Answer 1

$6- \frac{x}{3} = \frac{x}{7}$

$- \frac{x}{3} - \frac{x}{7} =-6$

$\frac{-7x-3x}{21} = -6$

$- \frac{10x}{21} =-6$ |*(-1)

$\frac{10x}{21} = 6$

$\frac{10x}{21} = \frac{6}{1}$

$10x*1=21*6$
$10x=126$

$x= \frac{126}{10}$

$x=12,6$