I need help quickly.

Question

Yesterday the math club had 1 less than 3 times their average attendance. Last week they had 3 more than their average attendance. If the attendance for both weeks were equal, what is the average attendance?

Answer 1

3x-1 = x+3

2x-1 = 3

2x = 4

x=2

The average attendance is 2.

3(2)-1 = 6-1 = 5 = 2 + 3