Question

If 5a+ib = 15-3i; then find the value of a+b
Just the final answer is enough!​

Answer 1

Answer:

Given that

5a+ ib= 15-3i

separate the real and imaginary parts

5a= 15 1. and ib= -3i 2

Divide 5 on both side 1

5a/5 = 15/5

a= 3

Also

from 2

b= -3

Answer 2

5a+ib=15-3i

comparing real and imaginary part

5a=15 ; ib=-3i

a=3 ; b=-3

a+b=3-3=0