Current location - Training Enrollment Network - Mathematics courses - Fifth grade math. Homework is divided into one group, each person has 7 more copies, and each person can't get 9 copies. How many people are there in a small group? How many copies?
Fifth grade math. Homework is divided into one group, each person has 7 more copies, and each person can't get 9 copies. How many people are there in a small group? How many copies?
Solution: Suppose there are X people in a group.

7X+7=9(X- 1)

7X+7=9X-9

7X+7-7X=9X-7X-9

2X-9+9=7+9

2X= 16

2x \2 = 16 \2

X=8

I'm exhausted ~