Answer:
The price of one ticket and one cookie is equal to $13
Step-by-step explanation:
Let
x -----> the price for one ticket
y ----> the price for one cookie
we know that
-----> equation A
Divide equation A by 6 both sides
therefore
(12xy-6x -12y)
12xy-18xy
6xy
I’m forced to write an explanation, sorry for the useless text