Dodaj ułamki: 1/4 + 3/4, 4/7 + 5/7, 1/2 + 5/8, 3/6 + 11/12, 2/3 + 3/4, 1/7 + 1/3, 3/5 + 1/2, 5/4 + 1/6, 5/6 + 3/8, 5/4 + 3/10, 6/9 + 4/6, 3/5 + 11/15, 10/14 + 20/21, 9/20 + 4/15, 10/16 + 9/8, 5/12 + 7/15, 5/10 + 1/2, 12/15 + 4/16, 7/8 + 9/12, 15/18 + 6/20, -4/11 +1/22, -10/14+4/9, 1 1/3 + 4/5, 2 1/9 + 1 5/6, -3/4 + 5/6, -5/12 + 11/18, 3 1/4 + 2 5/8, 4 2/3 + 1 5/7, -3 + 1/4, -4 + 2/3, -1 3/5 + 1/5, -2 4/7 + 3/7, -5 4/9 + 2/9, -1 1/3 + 2/3, -3 1/4 + 6/8, -6 3/7 + 1/2, -4 2/3 + 1/6, -3 3/8 + 1/2, -5 2/12 + 4/9, -7 9/10 + 4/15.