Question

Упростите
$frac{4-3y}{y+4} : (frac{4-y}{y+4} + frac{y}{y-4} )$

Answer 1

(4-y)/(y+4)+y/(y-4)=(4y-y²-16+4y+y²+4y)/(y²-16)=(12y-16)/(y²-16)
(4-3y)/(y+4)*(y+4)(y-4)/4(3y-4)=(4-y)/4