Question

What is the greatest common factor of the terms in the expression 21 x minus 18 x + 28 x y?
3
3x
x
xy

Answer 1

Answer:

find a common factor times it then minus what you ger

Answer 2

The only thing each of those terms have in common is an x.

3 does not go into 28, so 3 is not an option. Only one term has a y, the other two do not. Y is not an option.

The answer is x.