If it's not what You are looking for type in the equation solver your own equation and let us solve it.
| 1-13x=15 | | 1-13x=14 | | 1-13x=13 | | 1-13x=12 | | 1-13x=11 | | 1-13x=10 | | 1-13x=9 | | 1-13x=8 | | 1-13x=7 | | 1-13x=6 | | 1-13x=5 | | 1-13x=4 | | 1-13x=3 | | 1-13x=2 | | 1-13x=1 | | 1-12x=20 | | 1-12x=19 | | 1-12x=18 | | 1-12x=17 | | 1-12x=16 | | 1-12x=15 | | 1-12x=14 | | 1-12x=13 | | 1-12x=12 | | 1-12x=11 | | 1-12x=10 | | 1-12x=9 | | 1-12x=8 | | 1-12x=7 | | 1-12x=6 | | 1-12x=5 | | 1-12x=4 |