1 2/3 + 2 1/30

1 2/3 + 2 1/30   =

1 + 2 + 2/3 + 1/30 =

3 + 2/3 + 1/30  =

3 + 20/30 + 1/30   =

3 + 21/30  =

3 + 7/10