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 ago
    Favorite Answer

    multiply everything by 3

    3*a/3=a

    1/3b*3=b

    0*3=0

    a+b=0

    Source(s): My brain :)
  • 10 years ago

    Well, a/3 + b/3 = c

    Multiply by 3 on both sides.

    a + b = 3c

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