Riddles Brain Teaser Of The Day: The 4th Equation September 24, 2018June 25, 2018 gags Looking at the 3 “equations” below, what is the answer to the 4th one? 8 + 2 = 16106 5 + 4 = 2091 9 + 6 = 54153 7 + 3 = ? Show answer 21104 To arrive at each answer you first multiply the two numbers, then add the two numbers, and finally subtract the two numbers. Your final answer is each of these answers strung together.