To find the value of m and n set the real parts equal to each other and the
\imaginary parts equal to each other and then solve the two equations.
\\
Real parts:
\
Imaginary parts:
\
\
Solve the equations by substitution method.
\Consider the equation 
According to subtraction property of equality: if
, then
.
(Subtract 2n from each side)
(Additive inverse property:
)
Substitute
in equation 

(Distributive property:
) \
(Multiply:
)
(Subtract:
)
(Subtract 10 from each side)
(Commutative property: a + b = b + a)
(Additive inverse property:
)
(Subtract:
)
(Divide each side by negative 5)
(Cancel common terms) \ \
Substitute
in equation 

(Multiply:
) \
(Subtract:
)
The solutions is (3, 1). \ \
\