Question

[Nguyễn Hồ Trâm Anh]

Tìm cặp bằng nhau 

the fraction a/b such that a +b =2015	3/4-1/6	the fraction a/b such that a+b=2015	1/3+1/5-1/4
2/15-1/10	1/4+1/14	1/2+1/3+1/4	1/2-1/15
the number of the fraction a/b such that a+b=2014	the greatest fraction a/b such that a-b=2014	1/3+1/10	7/10-2/3+1/4
3/4-3/7	5/6+1/4	1/3+1/2-1/4	1/2+1/5+1/4
1/5-1/6	1/4+7/10	3/10+3/20	1/5+1/4