On the first play of a game, a running back gained 7 yards. On the next play, he lost 19 yards. Find the change in yards in the two plays.
7 - 19 = -12
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check
add 12 to both sides
12 + 7 - 19 = 12 - 12 ????
19 - 19 = 12 - 12
well 0 = 0
whew !
To find the change in yards in the two plays, you need to subtract the yardage gained on the first play from the yardage lost on the second play.
Yardage gained on the first play: 7 yards
Yardage lost on the second play: -19 yards
To find the change in yards, subtract the yardage lost from the yardage gained:
Change in yards = Yardage gained - Yardage lost
Change in yards = 7 yards - (-19) yards
To subtract a negative number, you can add the positive number, so:
Change in yards = 7 yards + 19 yards
Change in yards = 26 yards
Therefore, the change in yards in the two plays is 26 yards.