Suma razlomaka
| -10⁄-2 + -11⁄15 = | 5⁄-5 + -13⁄-14 = |
| -4⁄-18 + 16⁄12 = | 1⁄-12 + 19⁄8 = |
| 5⁄2 + 4⁄6 = | 17⁄-17 + 9⁄11 = |
| 18⁄15 + 3⁄13 = | 16⁄-3 + -1⁄-19 = |
| -10⁄-2 + -11⁄15 = | 5⁄-5 + -13⁄-14 = |
| -4⁄-18 + 16⁄12 = | 1⁄-12 + 19⁄8 = |
| 5⁄2 + 4⁄6 = | 17⁄-17 + 9⁄11 = |
| 18⁄15 + 3⁄13 = | 16⁄-3 + -1⁄-19 = |