Tolongin yahh No.3 please..^•^

3.A. 8 5/18 + (- 4 7/18) - 2 11/18 - (- 13/18)
= 149/18 - 79/18 - 47/18 + 13/18
= 36/18
= 2/1 atau 2

3.B. (-1/2 + 1/3) + [1/4 + (-1/3)] + (-1/20)
= (-30/60 + 20/60) + [15/60 + (-20/60)] + (-3/60)
= -10/60 + (-5/60) - 3/60
= -15/60 - 3/60
= -18/60 => masing2 dibagi 6
= - 3/10