SOLUTION: Can someone help me on this problem? I need to solve: 3x/7 - 5x/3 = 2/21 Thanks, Sher

Algebra ->  Equations -> SOLUTION: Can someone help me on this problem? I need to solve: 3x/7 - 5x/3 = 2/21 Thanks, Sher      Log On


   

Question 54786: Can someone help me on this problem?

I need to solve:
3x/7 - 5x/3 = 2/21
Thanks,
Sher
Answer by Cintchr(481) About Me  (Show Source):
You can put this solution on YOUR website!
+3x%2F7+-+5x%2F3+=+2%2F21+
Since the denominators of all three fractions are factors of 21, multiply each one by 21
+%2821%293x%2F7+-+%2821%295x%2F3+=+%2821%292%2F21+
reduce the fractions
+9x+-+35x+=+2+
Combine like terms
+-26x+=2+
divide by -26
+x+=+-2%2F26+
reduce
+x+=+-1%2F13+