Answer:
c
Step-by-step explanation:
Answer:
230 were sold at the door
170 were sold in advance
Step-by-step explanation:
x=at door y=in advance
x+y=400
3x+2y=1030
y=-x+400
2y=-3x+1030
y=-3/2x+515
-x+400=-3/2x+515
x=230 y=170
Your answer is 160. Sorry about that answer above I laughed reading it hahaha.
So are you trying to simplify one side to get it to look like the other?
