Oblicz :
a) 1/7 + 5/14
b) 3/4 + 5/12
c) 8/9 - 5/18
d) 1/3 + 3/4
e) 3/5 - 1/2
f) 1 1/2 - 1/3
a) 1/7 + 5/14=2/14+5/14=7/14=1/2
b) 3/4 + 5/12=9/12+5'/12=14/12=7/6=1 1/6
c) 8/9 - 5/18=16/18-5/18=11/18
d) 1/3 + 3/4=4/12+9/12=13/12=1 1/12
e) 3/5 - 1/2=6/10-5/10=1/10
f) 1 1/2 - 1/3=1 3/6-2/6=1 1/6
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Oblicz :
a) 1/7 + 5/14=2/14+5/14=7/14=1/2
b) 3/4 + 5/12=9/12+5'/12=14/12=7/6=1 1/6
c) 8/9 - 5/18=16/18-5/18=11/18
d) 1/3 + 3/4=4/12+9/12=13/12=1 1/12
e) 3/5 - 1/2=6/10-5/10=1/10
f) 1 1/2 - 1/3=1 3/6-2/6=1 1/6