Question

On one play, a football team gained 9 yards. On the next play, the football team received a penalty

of -10 yards.

Answer 1

If your asking what the sum of the yards is it would be -1

Explanation:

First I would make a number line from -10 to positive 10. Then from zero add nine. Then subtract 10 from 9. Since 10 is bigger than nine it would be a negative number. Hope this helped.