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b)-33+44=11
c)-23+(-17)=-23-17=-40
d)-2 i 1/5+3,3=-11/5+3,3=-2,2+3,3=1,1
e)7 i 1/3+(-4 i 5/6)=22/3+(-29/6)=44/6-29/6=15/6=2 i 3/6=2 i 1/2
f)-5 i 4/7+7=-5 i 4/7+6 i 7/7=1 i 3/7
-23+(-17)=-23-17=-40
-2 1/5 + 3,3= -2,2+3,3=1,1
7 1/3+(-4 5,6)= 22/3 -29/6=44/6-29/6=15/6=3 1/6
-5 4/7 +7=-39/7+49/7=10/7=1 3/7
-27+12=-15