Let your final bowling score be x. It is 14 pins less than your friends final score. Your friends final bowling score is 105. Then x is 14 pins less than 105. 1 way: This means that 105 is greater than x by 14. Mathematically, 105-x=14, -x=14-105, -x=-91, x=91. 2 way: When you add 14 to x, you'll get 105. x+14=105, x=105-14, x=91. Answer: Your final score is 91.
