SOLUTION: how do i simplify 9y-18 over 2-y by simplifying factors of one?

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: how do i simplify 9y-18 over 2-y by simplifying factors of one?      Log On


   

Question 260035: how do i simplify 9y-18 over 2-y by simplifying factors of one?
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
(9y-18)/(2-y)
9(y-2)/(2-y) multiply the denominator by -1.
9(y-2)/-1(y-2) cancel out the (y-2 terms.
9/-1=-9 ans.
Proof:
let y=3.
(9*3-18)/(2-3)
(27-18/-1
9/-1=-9