Adding mix numbers

Adding mix numbers 1

100

7 2/9 + 3 5/6

 10 19/18 or 11 1/18

200

5 2/8 + 9 5/6

14 26/24 or 15 2/24 = 15 1/12

300

6 5/8 + 3 6/9

9 93/72 or 9 34/24

400

3 1/4 + 2 1/2

5 3/4

500

What is 5 5/9 + 6 4/3

The answer is 11 17/9 or 12 8/9 

Adding mix numbers 2

100

2 3/4 + 3 5/8

5 11/8 = 6 3/8

200

4 3/8 + 3 4/16

7 10/16 = 7 5/8

300

7 8/5 + 9 9/40

16 73/40 = 17 33/40

400

12 4/5 + 8 6/20

20 22/20 = 21 2/20 = 21 1/10

500

25 5/6 + 54 2/24

79 22/24 = 79 11/12

Adding mix numbers with unlike demionators

100

5 4/7 + 7 5/ 4

13 23/28

200

3 6/8 + 5 4/32

8 28/32

300

4 3/6 + 4 8/9

9 21/54

400

5 4/3 + 6 7/8

13 5/24

500

8 3/2 + 7 6/3

15 21/6 = 18 3/6 = 18 1/2