Question

simplify this expression:
2/x-y + 3/x+y - 5/ y-x - 7x-9y/y^2-x^2

Answer 1

let's all make the denominators in the form of (x + y) and (x - y)
2/(x - y) + 3/(x + y) + 5/(x - y) + (7x - 9y)/ x2 - y2
LCD will be (x2 - y2) or (x + y)(x - y)
You are now ready to combine the terms

Answer 2

ok I have the denominator... still confused with the numerator? :/

Answer 3

Ok, {2(x + y) + 3(x - y) + 5(x + y) + (7x - 9y)} (x+y)(x-y)

Answer 4

Ready now to combine the terms in the numerator? But do the distributive property first

Answer 5

Let me refresh you, let's do the first term
2/(x-y) since the LCD is (x-y)(x+y) , it will be the LCD divided by denom (x-y) times num 2
so the first term will become 2(x+y)/(x+y)(x_y)
I placed all the num under one denom which is the LCD