Question

пожалуйста помогите с уравнением

Answer 1

$\frac{13}{21} - (x - 2 \frac{5}{7} ) = \frac{3}{14}$

$\frac{13}{21} - (x - \frac{19}{7}) = \frac{3}{14}$

$\frac{13}{21} - x + \frac{19}{7} = \frac{3}{14}$

$(\frac{13}{21} + \frac{19}{7} = \frac{13 + 57}{21} = \frac{70}{21} = \frac{10}{3} )$

$\frac{10}{3} - x = \frac{3}{14}$

$- x = \frac{3}{14} - \frac{10}{3}$

$- x = - \frac{131}{42}$

$x = \frac{131}{42} = 3 \frac{5}{42}$