klok yang ini gimana caranya

a) (3 2/3 : 1 1/2) x (2 1/2 x 1 1/3) = (11/3 : 3/2) x (5/2 x 4/3)
    = (11/3 x 2/3) x (5/2 x 4/3) = 220/27 = 8 4/27

b) (-2/5 + 3/4) x 2 1/2 = (-8/20 + 15/20) x 5/2 = 7/20 x 5/2 = 7/8