Margie and four of her friends are eating lunch at a restaurant. the total bill is $52.50 before tax and tip. part a: margie has a coupon good for $10 off their total purchase. if sales tax of 6% is collected on the discounted amount, what is the total cost after tax?

do you mean add both of the equations together

because if you do the answer is 10x-5

step-by-step explanation:

b

step-by-step explanation:

a difference is the result of subtraction. while each of these expressions has subtraction in it, a difference will be the result when subtraction is the last operation applied in the order of operations for the expression. this means subtraction must be outside of the parenthesis. only b has this.