Tử số là:(86-52):2=17
Mẫu số là:17+52=69
Vaayj phân số đó là17/69
không biết làm 100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000%
tu so la:[86-52]/2;mau so la:17+52=69 vap phan so do la 17/69