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(-2,1) * (-4 2/7)=
(-21/10)*(-30/7)=
630/70=
9
b)
(-7/8) : (-5,6)=
(-7/8):(-56/10)=
(-7/8)*(-10/56)=
70/448=
5/32
c)
9/10 : (-3/4)=
9/10*(-4/3)=
-36/30=
-1,2
d)
(-1 1/2) : (-0,06)=
(-1,5):(-0,06)=
25
e)
(-2 2/3) : 1,2=
(-8/3):6/5=
(-8/3)*5/6=
-40/18=
-2²/₉
f)
2/3 : (-6)=
2/3*(-⅙)=
-2/18=
-1/9
g)
(-0,45) : 1 4/5=
(-0,45):1,8=
-0,25
h)
(-2,75) : (-2,2)=
1,25
i)
(-3,5) : (-1 2/5)=
(-3,5):(-1,4)=
2,5