Hey guys, first step, one third plus two sevenths. Notice the bottom numbers are different. So first thing we'll do is multiply the bottom three times seven. That gives you 21. Multiply the diagonal seven times one. That's seven. Multiply the other diagonal three times two is six. Now add the top two numbers. Seven and six. Start at seven and count up. Seven, eight, nine, ten, eleven, twelve, thirteen. And that's the top number of the fraction. 13. And there's your answer. Next step, one third plus one half. The bottom numbers are different. So go ahead and multiply the bottom two numbers. Three times two equals six. Now do two times one is two and three times one is three. Now add the top two numbers. Two and three. Start at two and count up. Two, three, four, five. And that's the top number of the fraction is five. And there's your answer. Next up, we got two fifths plus three eighths. Again the bottom numbers are different. So let's multiply the bottom two numbers five times eight. That equals 40. Multiply the diagonal eight times two. That's 16. Multiply five times three. That's 15. Now we need to add the top two numbers. 16 and 15. 16 plus 15. Six and five is eleven. And one plus one plus one is three. So we get 31. And there's your answer. Next step, two thirds plus one fourth. Again the bottom numbers are different. So we'll multiply the bottom two numbers three times four. Here's you 12. Multiply four times two. Eight, three times one is three. Now add the top two numbers. Start at eight, eight, nine, ten, eleven. That's the top number of the fraction. And there's your answer. Next step, three fourths plus five sixth. Again the bottom numbers are different. Four times six is 24. Six times three. Eighteen four times five is 20. Now you got to add the top two numbers. 20 plus 18. Zero plus eight is eight. Two plus one is three. And there's your top number. Now the thing with this method is sometimes you have to simplify the fraction. You can simplify it by cancelling out like factors in the top and the bottom. Like 38 is also two times 19. And 24 is like two times 12. And then you can cancel out the like factor of two. And you're left with 19 over 12 for an answer. And that's it. See ya.