Answer:
21
Step-by-step explanation:
21-12=9
z - 12 = 9
z = 9+12
z=21
c=56.3
Sorry for the bad writing and diagram haha
Sum = (-3) + (-6) = -9
Yards gained are positive, and yards lost are negative.
If you lose 3 yards on one play and 6 yards on another, you have lost a total of 9 yards.
