Question

$\frac{a+b}{c + d}$
$- \frac{a - b}{c - d}$
Answer this: a+b/c+d - a-b/c-d​

Answer 1

(a+b)(c-d)-(a-b)(c-d)/c²-d²

=(ac-ad+bc-bd)-(ac-ad-bc+bd)/c²-d²

=ac-ad+bc-bd-ac+ad+bc-bd/c²-d²

=2bc-2bd/c²-d2