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:

Apply 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: )

Apply division property of equality: if a = b, then.

                          (Divide each side by 2)

                               (Cancel common terms)

                                 (Divide: )

Imaginary parts:

Apply Addition property of equality: if a = b then a + c = b + c.

       (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.