Subtracting complex numbers

To subtract complex numbers, you simply subtract the real parts and subtract the imaginary parts separately, then add the parts to form a complex number.

Let z=a+bi and let w=c+di.
z-w=(a-c)+(b-d)i

Examples of subtracting complex numbers

Evaluate (8+6i)-(2+4i)

• 8-2=6
• (6-4)i=2i
• Answer: 6+2i

Evaluate (5+4i)-(6-2i)

• 5-6=-1
• (4--2)i=6i
• Answer: -1+6i