SOLUTION: I have a problem that I can not complete 3/10x + 9/14x^2 The answer I was given is 3(7x + 15)/70x^2 How the heck did they get that???? Can you help?? By the way x^2= x squared

Algebra ->  Coordinate Systems and Linear Equations -> SOLUTION: I have a problem that I can not complete 3/10x + 9/14x^2 The answer I was given is 3(7x + 15)/70x^2 How the heck did they get that???? Can you help?? By the way x^2= x squared      Log On


   

Question 46678: I have a problem that I can not complete 3/10x + 9/14x^2 The answer I was given is 3(7x + 15)/70x^2 How the heck did they get that???? Can you help??
By the way x^2= x squared
Answer by Earlsdon(6294) About Me  (Show Source):
You can put this solution on YOUR website!
Simplify:
3%2F10x+%2B+9%2F14x%5E2
To add these fractions, you need to find the common denominator.
A common denominator here is 70x%5E2. Why? Because both 10x and 14x%5E2 are factors of 70x%5E2
%2810x%29%287x%29+=+70x%5E2
%2814x%5E2%29%285%29+=+70x%5E2, so...
3%287x%29%2F10x%287x%29+%2B+9%285%29%2F14x%5E2%285%29 Perform the indicated addition.
%2821x+%2B+45%29%2F70x%5E2 Factor a 3 from the numerator.
3%287x+%2B+15%29%2F70x%5E2