a) 7 1/2+5 2/3=7 3/6+5 4/6=12 7/6=13 1/6
b) 2 4/5+8/10=2 8/10+8/10=2 16/10=3 6/10=3 3/5
c) 14 1/4-2 1/2=14 1/4-2 2/4=13 5/4-2 2/4=11 3/4
d) 3 1/3-1/27=3 9/27-1 2/7=3 8/27
e) 15·1 1/5=15·6/5=90/5=18
f) 4 3/7·2=31/7·2=62/7=8 6/7
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a) 7 1/2+5 2/3=7 3/6+5 4/6=12 7/6=13 1/6
b) 2 4/5+8/10=2 8/10+8/10=2 16/10=3 6/10=3 3/5
c) 14 1/4-2 1/2=14 1/4-2 2/4=13 5/4-2 2/4=11 3/4
d) 3 1/3-1/27=3 9/27-1 2/7=3 8/27
e) 15·1 1/5=15·6/5=90/5=18
f) 4 3/7·2=31/7·2=62/7=8 6/7