Hey guys, first problems 5 7's plus 2 9's. First thing we do is we notice that the bottom two numbers are different. So we're going to go ahead and multiply the bottom two numbers. 7 times 9 is you 63. Then you multiply the diagonal 9 times 5 is 45. Multiply the other diagonal 7 times 2 gives you 14. Now you just add the two numbers that you got in the diagonal. 45 plus 14. 5 plus 4 is 9. 4 plus 1 is 5. So your answer is 59. 63rds. Next up. We have 2 and 1 3rd plus 3 and 1 4th. So let's go ahead and change that mixed number into an improper fraction. By doing 3 times 2 is 6 and adding 1 gives you 7. And it's still in thirds. So you have 7 thirds. And 4 times 3 is 12. Add one more. You're 13. And you're in fourths. So it's still 13 fourths. And now you just do the same method. Multiply the bottom two numbers. 3 times 4 is 12. Multiply the diagonal. 7 times 4 is 28. And multiply 3 times 13. Do that up here. 3 times 13. 3 times 3 is 9. 3 times 1 is 3. So you get 39. And now you need to add the two numbers. 9 and 8 is 17. And 1 and 3 is 4, 5, 6, 67. So your answer is 67, 12. And if you want to change that back into a mixed number, figure out how many times 12 goes into 67. And 12 goes into 67 five times. And when you do 5 times 12, you get 60. So you'll have a remainder of 7. So there's your 5. And you have 7 remainder. So you have 5 and 7 12ths. Last problem is 1 and 7-8 plus 3 and 2-3. We'll change those into improper fractions. 8 times 1 is 8. Add 7 more. Give you 15. So 15-8s. And 3 times 3 is 9. Add 2 more. That gives you 11. So plus 11 thirds. Now you just do the same thing. 8 times 3. Multiply the bottom. It gives you 24. Multiply the diagonal. 3 times 15. 15 times 3. 3 times 5 is 15. Carry the one. So you get 45 for that. And 8 times 11 is 88. Now we need to add the top two numbers. 88 plus 45. 8 and 5 is 13. And you get 13 there. So you end up with 133 over 24. If you want to change that into a mixed number, going to do a guess and check methods. See how many times 24 goes into 133. See, go ahead and we'll say 5. And we'll do 5 times 24. Just to see how many are going to be left over. 5 times 24 is 120. So that leaves a remainder of 13 left over. So you get 5 and 13, 24. And that's it. See ya.