Answer:
22.5
Step-by-step explanation:
Since
, you can omit B and C as possible solutions.
Now,
but since 16 is not divisible by 3, A is not correct either.
So D is the answer. To verify:
Hello :
<span>(4-5i) +(-2+3i) -(1-7i) = (4-2-1)+(-5+3+7)i =1+5i....( answer : B)</span>