Xa kusongezwa i-complex number kwenye, ngamanye amazwi xa kudityaniswa ii-complex numbers ezimbini, dibanisa amacala e-real nawe-imaginary ecaleni. Umzekelo, (2 + 3i) + (3 + 2i) = (2 + 3) + (3 + 2)i= 5 + 5i.