SOLUTION: On three consecutive passes, a football team gains 9 yards, loses 30 yards, and gains 20 yards. What number represents the total net yardage?

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Question 190557: On three consecutive passes, a football team gains 9 yards, loses 30 yards, and gains 20 yards. What number represents the total net yardage?
Answer by nerdybill(7384) About Me  (Show Source):
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On three consecutive passes, a football team gains 9 yards, loses 30 yards, and gains 20 yards. What number represents the total net yardage?
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Net yardage = +9 -30 + 20
Net yardage = -30 + 29
Net yardage = -1 yard