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.
Inverse operations are pairs of mathematical manipulations in which one operation undoes the action of the other