Some friends played a board game. During the game, one unlucky player had to move back 4 spaces 7 turns in a row. Find a number to represent that player's movements for those 7 turns

B) greg: 30 points , tremaine 38 points

So the first thing we do is to multiply the top equation by 3. the reason i want to do this is i notice there will be a 6y on both equations and can possibly add/subtract them. so we get 6y = -3x + 27. adding that and the second equation we get 6x = 27-15 which is 12. divide by 6 and we get 2. ∴ x = 2. substituting 2 into the first equation we get 2y = -2 + 9 which is 7. divide by 2 and we get 7/2. ∴ y = 7/2, x = 2.

and surely you know how much that is.