After three plays in which a football team lost 7 yd,gained 3 yd and lost 1 yd, respectively, the ball was placed on the teams own 30 yd line. Where was the ball before the three plays?

-7 + 3 - 1 = -5

30 + 5 = ?

To find out where the ball was before the three plays, we can subtract the total yards gained and lost during those plays from the current position of the ball (30 yards) on the team's own 30-yard line.

First, let's calculate the total yards gained and lost during the three plays:
Yards lost in the first play = 7 yd
Yards gained in the second play = 3 yd
Yards lost in the third play = 1 yd

Total yards gained and lost = 7 yd - 3 yd - 1 yd = 3 yd

Now, we subtract the total yards gained and lost (3 yd) from the current position of the ball (30 yards):
30 yd - 3 yd = 27 yd

Therefore, before the three plays, the ball was on the team's own 27-yard line.