The equation is 

To find the value of n and m set the real parts equal to each other

and the imaginary parts equal to each other.

Real parts:

According to Addition property of equality; if a = b then a + c = b + c

              (Add 5 to each side)

                    (Add: 3 + 5 = 8)

                           (Apply Additive inverse property: )

                                 (Apply Additive identity property: )

                            (Divide each side by 2)

                                 (Cancel common terms)

                                    (Divide: )

Imaginary parts:

        (Add 2 to each side)

              (Apply Additive inverse property: )

                     (Apply Additive identity property: )

                           (Add: )

            (Multiply each side by negative one)

                                 (Product of two same signs is positive)

The values of n and m are 4 and 5 respectively.