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b.-33+44=11
c.-23+(-17_=-40
d.16-60=-44
e.-15-25=-40
f.-30-(-50)=20
g.-3\4+(-3\4)=-6\4=-1i1\2
h.0,2-0,7= -0,5
i.-0,6-0,4=-1
j.-1-(-4\7)=-3\7
k.5,5-(-o,8)=6,3
l.-o,75+1\4=-1\2