The equations are .
Equation (1)
Equation (2)
Since , substitute 4y for x in the second equation.
(Multiply:
)
(Add: 8y + 3y = 11y)
Apply division property of equality: If a = b then .
(Divide each side by 11)
(Cancel common terms)
(Divide:
)
Substitute in first equation.
(Multiply:
)
The solution is .