Answer:
-3
Step-by-step explanation:
-12(x-12)=-9(1+7x)
-12x+144=-9-63x
-12x+63x=-9-144
51x=-153
x=-153/51=-3
You have to set up a system of equations
x+y=104
3x-y=104
Sodas = 78
Hotdogs = 26
The answer is 600, I got this by multiplying the two numbers
