This reads as The difference between 3 and a number. You put it the way you read it difference between 3 and a number = 3 - x The 1/2 affects both terms. So that makes b and d incorrect.
The left side is a bit harder. You want the sum of 6 + something. Read the rest of the given
The only way to make a question is if you have an account unless you want to make another account i think you have to log out and make a new account or go into a different device and make a new account for her.
