SOLUTION: 4a + a __ __ 7 21 that is 4a over 7 + a over 21 It is adding and subtracting Rational expressions.

Algebra ->  Rational-functions -> SOLUTION: 4a + a __ __ 7 21 that is 4a over 7 + a over 21 It is adding and subtracting Rational expressions.      Log On


   

Question 396393: 4a + a
__ __
7 21
that is 4a over 7 + a over 21
It is adding and subtracting Rational expressions.
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


Just like adding any other fractions. Find and apply the LCD and then add the numerators. Hint: 7 X 3 = 21.


John

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