At the phoney interior design store each salesperson receives a 7.5% commission on sales. what would the salesperson earn if she sold $1,750 in home furnishings?

An inverse operation is two operations that undo each other e.g. addition and subtraction or multiplication and division. You can perform the same inverse operation on each side of an equivalent equation without changing the equality. This gives us a couple of properties that hold true for all equations.