Z1=(8-7i) z2=(-4+7i)

To find the sum of z1 and z2, you simply add their real parts and imaginary parts separately.

Real part of z1 + z2: 8 + (-4) = 4 Imaginary part of z1 + z2: (-7) + 7 = 0

Therefore, z1 + z2 = 4 + 0i, which can be simply written as z = 4.