The equations of linear system are
.
Solve the equation 2:
for x, since the x has a coefficient of 1.
Subtract 4y from each side.
\
.
Substitute the value of
in the equation 1:
and solve for y.

Apply distributive property:
.


.
Subtract 30 from each side.
\


Divide each side by negative 17.
\
Cancel common terms.
\
.
Substitute the value of
in the equation
to find the value of x.


.
The solution
.
The solution
.