Question

4m-9n-6m+3n

Answer 1

This is just combining like terms, from what I can see. By combining 4m and -6m, you get -2m. By combing -9n and 3n, you get -6n. This would come out to -2m-6n.

Answer 2

how did you figure this out top get the answer you got

Answer 3

I think that's a good way of explaining it...