tolong di jawab 1-4 pake cara

1) 9 6/8 - 2 1/4 - 2 2/6 =78/24 - 9/24 - 14/24
    = 55/24
    = 2 7/24
2) 8 11/12 - 1 1/6 - 2 1/8 = 96/24 - 7/24 - 17/24
    = 72/24
    = 3
3) 11 8/9 - 3 1/6 - 4 1/2 = 107/18 - 19/18 - 9/8 
    = 79/18
    = 4 7/8
4) 10 3/4 - 4 1/8 - 2 1/2 = 43/8 - 33/8 - 5/8 = 5/8