Mixed add/subtract fractions

What is 1/6 + 3/6

• 4/6

• 2/6

• 4/12

What is 8/9 - 7/9

• 1/0

• 1/9

• 2/9

6/10 + 3/10

• 3/5

• 4/10

• 3/10

8/12 - 4/12

• 4/0

• 12/12

• 4/12

10/10 - 5/10

• 5/10

• 3/10

• 8/10

12/15 - 8/15

• 4/15

• 12/12

• 16/15

6/9 + 2/9

• 8/18

• 4/9

• 8/9

10/14 - 8/14

• 2/14

• 18/14

• 10/14

9/9 - 4/9

• 5/9

• 6/9

• 3/9

9/14 + 5/14

• 4/14

• 14/14

• 3/14