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b) -6 2/3:2=-20/3*1/2=-10/3=-3 1/3
c) -0,2*(-0,2)=-2/10*(-2/10)=1/25
d) -3 1/3*(-3)=-10/3*(-3)=10
e) (-3)^2*1/3=9*1/3=3
f) (1/3)^2*(-9)=1/9*(-9)=-1
g) -6^2:1/2=-36*2=-72
h) 3 3/4:(-1,25)^2=15/4:(-125/100)^2=15/4:(-5/4)^2=15/4:25/16=15/4*16/25=12/5=2,4