Calcule a soma das frações. Se necessário, simplifique

3/9 + 3/3 =

3/7 + 3/8 =

2/5 + 1/2 =

1/2 + 4/5 =

5/6 + 1/3 =

9/5 + 3/4 =

1/3 + 3/2 =

23/9 + 30/3 =

3/5 + 5/7 =

12/5 + 3/7 =

5/7 + 83 =

2/3 + 5/18 =

7/10 + 9/30 =


AJUDA