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# How to do this problem for math?

a/3 + 1/3b = ?

Answer and explain please! (:

Do you cross multiply, add across or what? I don't understand!

Update:

MULTIPLE CHOSE ANSWER:

A. 3ab+3 / 3b

B. ab+1 / 3b

C. a+1 / 3b

D. None of the above

### 2 Answers

Relevance

- 10 years agoFavorite Answer
multiply everything by 3

3*a/3=a

1/3b*3=b

0*3=0

a+b=0

Source(s): My brain :)

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