Answer:
they need 23 yards to keep possession of the ball
Explanation:
they must gain 10 yards to keep the ball.
Word form
First you do 10 times 4 equals 40
Second you do 40 minus 18 equals 22
Third you do 22 plus 5 equals 27
Last you do 27 minus 4 equals 23
They would need 23 yards to keep possession of the ball.
Math form
10*4=40
40-18=22
22+5=27
27-4=23
I hope this is correct and if it is i hope it helps.