SOLUTION: when doing this problem can you use the cross multiply method or do you use the LCM/LCD method. I tried to do the cross mulitply method but the answer did not turn out right.....Ca

Algebra ->  Complex Numbers Imaginary Numbers Solvers and Lesson -> SOLUTION: when doing this problem can you use the cross multiply method or do you use the LCM/LCD method. I tried to do the cross mulitply method but the answer did not turn out right.....Ca      Log On


   

Question 142500: when doing this problem can you use the cross multiply method or do you use the LCM/LCD method. I tried to do the cross mulitply method but the answer did not turn out right.....Can you help
Answer by rapaljer(4671) About Me  (Show Source):
You can put this solution on YOUR website!
If you use the "cross multiply" method, you must use the PRODUCT of the two denominators for your LCD!! Sometimes this method is convenient, especially when the LCD is actually the product of the two denominators anyway. Sometimes the other method is easier.

R^2