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