I'm. it 100% sure because the equation has A's as variable but other than that the answer should be -1 hope this helps -2x-5x=7 so you would subtract 5 from 2 and get -7x then divide so -7/7=-1
You need the greatest common factor of the two numbers. In this case, 20 is a factor of 100, meaning that Angie can make 20 groups, each with 5 cookies and 1 brownie.