FAST HURRY HELP PLZZ

There are 15 plates and each plate is either 7 or 12 inches diameter. which systems of equations do you use to find the number of 7 inch plates, x and 12 inch plates, y

Solve -2(4y + 6) = 52. 5 -5 8 -8 and !

2y= 3 2 x−2 y = − 1 3 x + 1 y=− 3 1 x+1