1) 5 58/61 + 1 12/61 = 7 9/61
2) 4 121/300 + 7 199/300 = 11 1/15
3) 5 380/401 + 1 127/401 = 7 100/401
4) 4 253/540 + 18 307/540 = 23 1/270
1) 5 58/61 + 1 12/61 = 7 9/61
2) 4 121/300 + 7 199/300 = 11 1/15
3) 5 380/401 + 1 127/401 = 7 100/401
4) 4 253/540 + 18 307/540 = 23 1/270