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b) -7+11=4 4-6=-2
c) 5-(-12)=19 19-7=12 12+14=26
d) -2(-8)=10 10-6=4 4-3=1
e)1 6/10 -2 1/6=-34/60-1= -1i17/30
f) -3 1/4+2 3/4= 6 6-0,6=5,4