Question

5y-(7-2y)-(4y+8)=2y
6y*(14y-9)-13y*(6y-1)=24y+13
(2x-3)^2-(2x+1)*(2x-5)+3x-14
(x+4)*(x-4)-(2x-3)^2=-3x*(x+1)-22

Answer 1

$5y-(7-2y)-(4y+8)=2y$
$5y-7+2y-4y-8=2y$
$3y-2y=7+8$
$y=15$
Ответ: 15