Given equations are,
\ ----------(1)
---------(2)
The first equation is already solved for x,
\So, substitute for y in the second equation.
(Second equation)
(Substitute
)
Apply distributive property: .
(Multiply:
)
(Apply commutative property:
)
(Add:
)
(Add 8 to each side)
(Apply additive inverse property:
)
(Apply additive identity property:
)
(Add:
)
(Divide each side by 5)
(Cancel common terms)
(Divide:
)
Substitute for y in either equation to find x.
(first equation)
(Substitute
)
(Apply additive inverse property:
)
The solution is .
Check the solution:
\Check the solution by graphing.
\Draw a coordinate planes.
\We can observe above graph,
\The graphs appear to intersect at (0, 2 )
\The solution is true.
The solution is .