5/9+ 4/9 = 9/9 =1
2|3 + 1/3 = 3/3 = 1
1\4 + 3/4 = 4/4 = 1
7\12+ 5/12 = 12/12 = 1
1-5/9=9/9-5/9=4/9 5/9+4/9=1
1-2/3=3/3-2/3=1/3 2/3+1/3=1
1-1/4=4/4-1/4=3/4 1/4+3/4=1
1-7/12=12/12-7/12=5/12 7/12+5/12=1
5/9+ 4/9 = 9/9 =1
2|3 + 1/3 = 3/3 = 1
1\4 + 3/4 = 4/4 = 1
7\12+ 5/12 = 12/12 = 1
1-5/9=9/9-5/9=4/9 5/9+4/9=1
1-2/3=3/3-2/3=1/3 2/3+1/3=1
1-1/4=4/4-1/4=3/4 1/4+3/4=1
1-7/12=12/12-7/12=5/12 7/12+5/12=1