1/3+1/6 1/2+1/3 3/5-1/10 1/12+5/6 1/3+1/4 3/4-1/8 1/5+1/6 4/15+2/5 7/10-1/2 1/3-1/4

1/3+1/6=2/6+1/6=3/6=0.5
1/2+1/3=3/6+2/6=5/6
3/5-1/10=6/10-1/10=0,5
1/12+5/6=1/12+10/12=11/12
1/3+1/4=4/12+3/12=7/12
3/4-1/8=6/8-1/8=5/8=0,625
1/5+1/6=6/30=5/30=11/30
4/15+2/5=4/15+6/15=10/15=2/3
7/10-1/2=7/10-5/10=2/10=0,2
1/3-1/4=4/12-3/12=1/12