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

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

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) (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

My calculator said it, I believe it, that settles it

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