Amy Rented 3 movies and 2 video games for a total of $21 the next month.
Let x represent movies be x ,
Let y represent video games be y,
3 x + 2 y = 21 -----------------equ 1
She rented 8 movies and 4 video games for a total of $49.
8 x + 4 y = 49 -------------- equ 2
Find the cost for each movie in each video game
Solving equ 1 and equ 2 , we have:
3 x + 2 y = 21 -----------------equ 1 x 2 = 6x + 4 y = 42 ------------------- equ 3
8 x + 4 y = 49 -------------- equ 2 x 1 = 8x + 4y = 49 -------------------equ 4
equ 4 minus equ 3 , we have