4/5×(-5/4) 4/5X(-25/6)X(-7/10) (-24/13)X(-16/7)X0X4/3 5/4X(-1.2)X(-1/9) (-3/7)X(-1/2)X(-8/15)过程

问题描述:

4/5×(-5/4) 4/5X(-25/6)X(-7/10) (-24/13)X(-16/7)X0X4/3 5/4X(-1.2)X(-1/9) (-3/7)X(-1/2)X(-8/15)过程
4/5×(-5/4) 4/5X(-25/6)X(-7/10) (-24/13)X(-16/7)X0X4/3 5/4X(-1.2)X(-1/9) (-3/7)X(-1/2)X(-8/15)求过程速度 急啊真的!过程啊

4/5×(-5/4) =-4/5×5/4=-1 4/5X(-25/6)X(-7/10) =4/5X25/6X7/10=(4X25X7)/(5X6X10)=(100X7)/(3X100)=7/3(-24/13)X(-16/7)X0X4/3 =05/4X(-1.2)X(-1/9)=5/4X1.2X1/9=5/4X6/5X1/9=3/2X1/9=2/3(-3/7)X(-1/2)X(-8/15)= -...