SOLUTION: how would i do this? Combine the following fractions by addition or subtraction as directed 3 over a+2 + 4 over 2-a - 6 over asq. - 4

Algebra ->  Numeric Fractions Calculators, Lesson and Practice -> SOLUTION: how would i do this? Combine the following fractions by addition or subtraction as directed 3 over a+2 + 4 over 2-a - 6 over asq. - 4      Log On


   

Question 146857: how would i do this? Combine the following fractions by addition or subtraction as directed
3 over a+2 + 4 over 2-a - 6 over asq. - 4
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
From your explanation, I think this is your problem.
3%2F%28a%2B2%29%2B4%2F%282-a%29-6%2F%28a%5E2-4%29
First step is to find a common denominator.
Let's re-write the equation using the following,
a%5E2-4=%28a%2B2%29%28a-2%29
Using this identity, we can find the common denominator,

If we multiply the first term by (a-2)/(a-2)
and the second term by (a+2)/(a+2), then we
will have the common denominator (a+2)(a-2).




3%2F%28a%2B2%29%2B4%2F%282-a%29-6%2F%28a%5E2-4%29=%28-a-20%29%2F%28%28a%2B2%29%28a-2%29%29
3%2F%28a%2B2%29%2B4%2F%282-a%29-6%2F%28a%5E2-4%29=-%28a%2B20%29%2F%28%28a%2B2%29%28a-2%29%29