Answer :
8 2/3 - 7 3/4= X
8 ?/12- 7 ?/12=X
8 8/12- 7 9/12
104/12- 93/12
104/12-93/12=11/12
7 3/4+11/12=8 2/3
X=11/12
8 ?/12- 7 ?/12=X
8 8/12- 7 9/12
104/12- 93/12
104/12-93/12=11/12
7 3/4+11/12=8 2/3
X=11/12