SOLUTION: Simplify rational expressions: 12 _____ 6x-18 -21 _______ 7x-14 5x-10 ______ x-2 Can someone please help me to understand how to do these.

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Simplify rational expressions: 12 _____ 6x-18 -21 _______ 7x-14 5x-10 ______ x-2 Can someone please help me to understand how to do these.      Log On


   

Question 674608: Simplify rational expressions:
12
_____
6x-18

-21
_______
7x-14

5x-10
______
x-2
Can someone please help me to understand how to do these.
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi

Simplify rational expressions: 

'Reducing' by Finding Factors both Numerator and denominator have in Common

12%2F%286x-18%29+=+cross%286%29+%2A2%2Fcross%286%29%28x-3%29=+2%2F%28x-3%29+ 

-21%2F%287x-14%29+=+cross%287%29%2A-3%2Fcross%287%29%28x-2%29+=+-3%2F%28x-2%29 

+%285x-10%29%2F%28%28x-2+%29%29+=5cross%28%28x-2%29%29%2Fcross%28%28x-2+%29%29+=+5+