Answer: x=10
Step-by-step explanation: 9 + 4x-12 + 6x = 97
Combine like terms: 6x + 4x and 9-12
10x -3 = 97
Add 3 to both sides
10x = 100
Divide 10 by both sides
X=10
500+(x115)=2685
the 500 is the money the club is putting towards the trip. the x is the number of club members. the 115 is the cost each member will pay to go on the trip.
subtract 500 from each side leaving you with
(x115)=2185
divide each side by 115
x=19
there are 19 club members going on the trip.