(-2又2分之1)/(-16分之1)*2
=40*2
=80
-6分之5/(-4分之5)*2分之3-(-2分之1)
=2/3*3/2+1/2
=1+1/2
=1.5
[-3的2次方-(-4的3次方]/[(-9)-(-4)]
=[-9+64]/[-5]
=55/[-5]
=-11
(-2又2分之1)/(-16分之1)*2 -6分之5/(-4分之5)*2分之3-(-2分之1) [-3的2次方-(-4的3次方]/[(-9)-(-4)
=-5/2*(-16)*2-(5/6)*(-4/5)*(3/2)+(1/2)*(9+64)/(-5)
=80+(2/3)*(3/2)+(73/2)*(-1/5)
=80+1-(73/10)
=81-7.3
=73.7