The system of equations are
.
To solve the equation 1 for x as follows:
\
(Write equation 1)
(Add 4y to each side)
The value of
substitute in equation 2, and solve for y as follows:
(Write equation 2)
(Substitute
)
(Simplify)
(Add 11 to each side)
(Divide each side by 2)
The value of
substitute in the value of
.
(Write value of x)
(Substitute
)
(Simplify)
Observe the graph of system of equations
, these two equations of lines are intersect at point
.
The ordered pair
is solution of system of equations.