zad.1 Mnożenie i dzielenie liczb wymiernych a)(-2,1) x (-4 2/7)=
b) -7/8 : (-5,6)=
c) 9/10 : (-3/4)=
d)(-1 1/2) : (-0,06)=
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a)-21/10*(-30/7)=3/10-30/1=3*3=9
b)-7/8: (-56/10)=-7/8*(-10/56)=1/8*10/8=10/64
c)9/10:(-3/4)=9/10* (-4/3)= -12/10=-1,2
d)-3/2:(-6/100)=-3/2*(-100/6)=1/2*100/2=1/2*50=25