1) (-4/5)•(-3/8)•(-5/12) = (-4•-3•-5) / (5•8•12) = -60 / 480 = -1/8
2) (-9/10)•(5/6)•(-2/3) = (-9•5•-2) / (10•6•3) = 90 / 180 = 1/2
3) (-7/8)•(-5/6)•(-24/25) = (-7•-5•-24) / (8•6•25) = -840 / 1200 = -7/10
4) (-25/44)•(63/100)•(22/45)•(-16/7) = (-25•63•22•-16) / (44•100•45•7) = 1008000 / 1386000 = 14/19
1) (-4/5)•(-3/8)•(-5/12) = (-4•-3•-5) / (5•8•12) = -60 / 480 = -1/8
2) (-9/10)•(5/6)•(-2/3) = (-9•5•-2) / (10•6•3) = 90 / 180 = 1/2
3) (-7/8)•(-5/6)•(-24/25) = (-7•-5•-24) / (8•6•25) = -840 / 1200 = -7/10
4) (-25/44)•(63/100)•(22/45)•(-16/7) = (-25•63•22•-16) / (44•100•45•7) = 1008000 / 1386000 = 14/19