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b) 1 5/6 - 3 1/3= 11/6-10/3=11/6-20/6=-9/6=-1 3/6=-1 1/2
c) 4,3-7,5=-4 8/10=-4 4/5
d) -4,5- 2 1/4= -4 20/40-2 10/40=-6 30/40=-6 3/4
e) -3 1/6-(-5 5/6)=-3 1/6+5 5/6=-2 7/6 + 5 5/6= 3 2/6=3 1/3
f) 7 1/3+(-4 5/6)=7 2/6-4 5/6=2 3/6=2 1/2
g) -5 4/7 + 7=1 3/7
h) 1 2/3-9=-7 1/3
i) -6- (-4 5/9)= -6+4 5/9=-1 4/9