Question

$frac{2x}{x-a}$-$frac{2x}{x+a}$
$frac{2-ab}{2a+ab}$+$x-frac{x ^{2} }{x+1}$

$frac{7}{ x^{2} - y^{2} } - frac{2}{xy- x^{2} } - frac{12}{ x^{2} +xy}$
$frac{5}{(a+2 ) ^{2} } - frac{5}{ a^{2}-4 } - frac{5}{a+2}$

Answer 1

5/x+4= 2/x-2 |•(x+4)(x-2)
5(x-2)=2(x+4)
5x-10=2x+8
3x=18
X=6