Answer:
{y,x} = {12,1}
Step-by-step explanation:
Solve equation [2] for the variable y
[2] y = 12x
Plug this in for variable y in equation [1]
[1] (12x) - x = 11
[1] 11x = 11
Solve equation [1] for the variable x
[1] 11x = 11
[1] x = 1
By now we know this much :
y = 12x
x = 1
Use the x value to solve for y
y = 12(1) = 12