1/2+1/3等于5/6 1/2+1/4等于3/4,1/3-1/4等于1/12。3/4-1/2等于1/4,1/8-1/12等于1/24。
5/6+1/2=4/3
4/3-3/4=7/12
1-4/7=3/7
4/3+3/2=17/6
5/9+18/5=5/6
3/8+7/10+5/8=17/10
7/8-(1/8+3/4)=0
4/7+1/6-4/7=1/6
2-7/9-2/9=1
3/5+7/8+2/5=15/8
7/9-(1/9+1/3)=1/3
1/4+(2/5+3/4)=7/5
5/6-3/10+1/6-7/10=0
3/4+1/6-2/3=1/4