SOLUTION: how would i do this? Combine the following fractions by addition or subtraction as directed 7 over xz + 2 over xy 4 over yz

Question 146835: how would i do this? Combine the following fractions by addition or subtraction as directed
7 over xz + 2 over xy 4 over yz
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Combine the following fractions by addition or subtraction as directed
7 over xz + 2 over xy 4 over yz
-----------------
(7/xz) + (2/xy) + (4/yz)
lcd = xyz
=(7y/xyz) + (2z/xyz) + (4x/xyz)
= (7y+2z+4x)/xyz
==================
Cheers,
Stan H.
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