| 1) | 3x - 1 = 21 | 2) | 4x -5 = 2 |
| 3) | 2x + 3 = -4 | 4) | 4x + 2 = 12 |
| 5) | 4x + 8 = -3 | 6) | 4x -3 = -7 |
| 7) | 4x -3 = 5 | 8) | 2x -2 = 15 |
| 9) | 3x -5 = 6 | 10) | 2x + 6 = 20 |
| 11) | 4x + 5 = -22 | 12) | 2x + 2 = 10 |
| 13) | 3x -6 = -5 | 14) | 3x -3 = 16 |
| 15) | 3x -3 = 21 | 16) | 2x -5 = 1 |
| 17) | 3x + 7 = -8 | 18) | 2x + 6 = -1 |
| 19) | 3x + 6 = -4 | 20) | 4x -5 = 20 |
| 21) | 3x + 7 = -21 | 22) | 2x -6 = -19 |
| 23) | 4x + 1 = -5 | 24) | 4x -3 = -22 |
| 25) | 2x -3 = -21 | 26) | 4x + 1 = 0 |
| 27) | 4x + 5 = 11 | 28) | 3x + 5 = 6 |
| 29) | 4x + 1 = -20 | 30) | 4x + 1 = -13 |
| 31) | 3x -5 = 4 | 32) | 4x + 4 = 15 |
| 33) | 4x -4 = -3 | 34) | 4x + 1 = 1 |
| 35) | 3x -3 = -9 | 36) | 4x -3 = 15 |
| 37) | 2x + 8 = -7 | 38) | 4x + 3 = 20 |
| 39) | 2x -3 = -13 | 40) | 2x + 4 = -7 |
Joke:
You are warned!; if a mathematician says your child can become a banker or plumber, he means both and would call it 'OR' rule.