A football team gained 9 yards on one play and then lost 22 yards on the next. write a sum of intergers to find the overall change in field position. explain your answer

Let x be the original position.

After the first play they gain 9 yards. The position can be represented by

x + 9

After the second play they lose 22 yards. The position can be represented by

x + 9 - 22 = x - 13

Therefore, in total they lost 13 yards.