Answer: The correct option is (B) 
Step-by-step explanation: We are given the following system of equations :

We are to find the equation that could be the result of using substitution to solve the above system.
Substituting the value of x from equation (i) in equation (ii), we get

Thus, the required equation is 
Option (B) is CORRECT.
The answer to your question is A
Answer:
option D

Step-by-step explanation:
Given in the question are 4 number
5√1/3 - 
2 - 
9 + 

A Complex Number is a combination of a Real Number and an Imaginary Number
<h3>Example </h3>
a + ib
where a is real number
b is imaginary number
i is 'lota' which is √-1
<h3>So according to the definition above </h3>
is complex number in which
is real part
=
is the imaginary part