(19-8 7/8)-(4 5/6-2 8/9)

Question

(19-8 7/8)-(4 5/6-2 8/9)

Answer 1

1)19-8 7/8=19-71/8=152/8-71/8=81/8

2)4 5/6-2 8/9=87/18-52/18=35/18

3)81/8-35/18=729/72-140/72=589/72=8 13/72