The equations are
\ (equation 1)
(equation 2)
Since , substitute
for y in the first equation.
(equation 1)
(replace
)
(Distributive property:
)
(Multiply:
)
(Add:
)
(Add 24 to each side)
(Additive inverse property:
)
(Additive identity property:
)
(Add:
)
(Divide each side by 25)
(Cancel common terms)
(Divide:
)
Now Substitute 3 for x in either equation to find the value of y.
\ (equation 2)
(replace x by 3)
(Multiply:
)
(Subtract:
)
The solution is
The solution is .