Answer:

Step-by-step explanation:
Given



Required
Determine an equation to find number of seats
Let the number of seats in each car be represented by n;
If 
Then:


This implies that there are 4n total seats
Solving further:

Substitute values for the above parameters:


Reorder
---- This equation can be used to solve for n
I would suggest asking your teacher for help that seems like a lot... :(
Answer:
14x-11y
Step-by-step explanation:
6x-2y-5=5-9y+8x
eliminate opposites
6x-2y-9y+8x
collect like terms
14x-11y