front 1 6 = x/4 + 2 | back 1 16 |
front 2 9x - 7 = -7 | back 2 0 |
front 3 -4 = x/20 - 5 | back 3 20 |
front 4 (v+9)/3 = 8 | back 4 15 |
front 5 -9x + 1 = -80 | back 5 9 |
front 6 -2 = 2 + v/4 | back 6 -16 |
front 7 -6 + x/4 = -5 | back 7 4 |
front 8 0 = 4 + x/5 | back 8 -20 |
front 9 -1 = (5+x)/6 | back 9 -11 |
front 10 2(n+5) = -2 | back 10 -6 |
front 11 -6 = n/2 -10 | back 11 8 |
front 12 -15 = -4m + 5 | back 12 5 |
front 13 8n+7 = 31 | back 13 3 |
front 14 (n+5)/-16 = -1 | back 14 11 |
front 15 8 + b/-4 = 5 | back 15 12 |
front 16 -243 = -9(10+x) | back 16 17 |
front 17 7(9+k)=84 | back 17 3 |
front 18 m/9 - 1 = -2 | back 18 -9 |
front 19 -9x - 13 = -103 | back 19 10 |
front 20 10-6x = -104 | back 20 19 |