Question

СРОЧНО ПЖ!!!!!!!!!!!!

Answer 1

$\frac{7b}{a - b} \times \frac{ {a}^{2} - ab }{35b} = \frac{7}{a - b} \times \frac{a(a - b)}{35} =$=
$\frac{7a}{35}$
a=61
$= \frac{61}{5}$
=12 целых и 1/5