If we add 10 plus 3 that equals 13 and then we multiply that by 7 because of the pemdas rule that equals 91. then we subtract 91 by 82 and that equals 9.
Each dvd cost $7.50 how? Your friends buy 8 dvd's and in total is 60, you want to divide 60 from 8 and find that it's 7.50 and then multiply 8 to 7.50 and it should be 60. Hope this helps!!