What is the greatest common factor for 84 and 56?

Factors of 56 are: 1, 2, 4, 7, 8, 14, 28, 56

Factors of 84 are: 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84

The outside term multiplies by the outside term on the oposite side to equal the answer.

Example:

Look at the factors of 84

84X1=84

2X42=84

3X28=84

and so on!