Question

#249 под буквами б,в

Answer 1

..............................

Answer 2

=-8/25*(-5/16)*(-4/5)=-2/25
=17/9:(1 9/12-3 2/12)=17/9:(1 9/12-2 14/12)=17/9:(-1 5/12)=17/9*(-12/17)=
=-1 1/3