Question

Simplify:1/(x-3)-2/(x+3)+3/(x-3)

Answer 1

first, the LCD is (x+3)(x-3)

so, if we are going to make them all having the same denominator the new form would be.

((x+3)-2(x-3)+3(x+3))/(x-3)(x+3), then distribute.

(x+3-2x+6+3x+9)/(x-3)(x+3), combine like terms

(2x+18)/(x-3)(x+3)