13/7 + 14/19 + 4/7 + 5/1= (319 + 147 + 419 + 57) / (7*19= (57 + 98 + 76 + 35) / 13= 266 / 13= 2
27/16 + 11/42 + 9/16 + 17/4= (742 + 1116 + 942 + 1716) / (16*42= (294 + 176 + 378 + 272) / 67= 1120 / 67= 5/3
35/18 + 4/81 + 7/18 + 5/8= (581 + 418 + 781 + 518) / (18*81= (405 + 72 + 567 + 90) / 145= 1134 / 145= 7/9
1
3/7 + 14/19 + 4/7 + 5/1
= (319 + 147 + 419 + 57) / (7*19
= (57 + 98 + 76 + 35) / 13
= 266 / 13
= 2
2
7/16 + 11/42 + 9/16 + 17/4
= (742 + 1116 + 942 + 1716) / (16*42
= (294 + 176 + 378 + 272) / 67
= 1120 / 67
= 5/3
3
5/18 + 4/81 + 7/18 + 5/8
= (581 + 418 + 781 + 518) / (18*81
= (405 + 72 + 567 + 90) / 145
= 1134 / 145
= 7/9