The parking lot had 1.5 times more trucks than cars. after 45 more cars came to the parking lot and 12 trucks left, there were 17 more cars than trucks on the parking lot. how many cars were there on the parking lot?

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.