Math Is Fun Forum

mathxyz

Member

From: Brooklyn, NY

Registered: 2024-02-24

Posts: 1,053

Express R As Rational Expression

Given R = (1/a) + (1/b) + (1/c), express R as a rational expression.

Let me see.

LCD on left side is abc.

So, abc ÷ a = bc.

Then,  abc ÷ b = ac.

Finally, abc ÷ c = ab

On the right side, I get (bc + ac + ab)/(abc), which is a fraction in terms of a, b, and c.

I say R = (bc + ac + ab)/(abc) is the answer.

You say?

Bob

Administrator

Registered: 2010-06-20

Posts: 10,621

Re: Express R As Rational Expression

All correct.

Bob

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mathxyz

Member

From: Brooklyn, NY

Registered: 2024-02-24

Posts: 1,053

Re: Express R As Rational Expression

All correct.

Bob

Perfect.