Question

1/(a+b+x) = 1/a + 1/b + 1/x​

Answer 1

$[a 0, b 0, x0, x = −(a + b)]</p><p></p><p>1 1 1 1 =-+-+ (a + b + x) a b</p><p></p><p>1 (a + b + x) 1 1 = + X a 1 b</p><p></p><p>X- - (a + b + x) 1 1 (a + b + x)x a b</p><p></p><p>x-a-b-x (a + b + x)x b+a ab</p><p></p><p>-(a + b) (a + b + x)x (a + b) ab$