The system of equations are
.
------------------> (1)
------------> (2)
-------------> (3)
Use elimination to make a system of two equations in two variables.
\Multiply equation (2) by 2.
\
------------------> (4)
Subtract equations (4) from (1).
\
--------------> (5)
Addition equations (2) from (3).
\
--------------> (6)
Multiply equation (6) by 5.
\
---------------> (7) \ \
Addition equations (7) and (5).
\
Divide each side by negative 4.
\


Substitute
value in equation (6).

Product of two same sings positive.
\

Subtract 1 from each side.
\


Divide each side by 4.
\

Substitute
and
value in equation (1).

Product of two different sings is negative.
\



Divide each side by 6.
\


The values are
.