Addition and subtraction of fractions part 1

1/3 + 1/4

1/2 - 1/5

5/6 - 1/3

2/3 + 1/5

1/6 + 2/5

1/2 - 3/10

7/10-1/4

3/8 - 1/3

1/5 + 2/7

4/9 - 1/6