| ( | 29 10 | − | x | ) | × | 6000 | ÷ | x | = | 400 |
| Multiply both sides of the equation by: | x |
| ( | 29 10 | − | x | ) | × | 6000 | = | 400 | x |
29 10 | × | 6000 | − | x | × | 6000 | = | 400 | x |
| 17400 | − | x | × | 6000 | = | 400 | x |
| - | 6000 | x | − | 400 | x | = | - | 17400 |
| - | 6400 | x | = | - | 17400 |
| 17400 | = | 6400 | x |
| 6400 | x | = | 17400 |
| x | = | 17400 | ÷ | 6400 |
| = | 17400 | × | 1 6400 |
| = | 87 | × | 1 32 |
| x | = | 87 32 |
| x | = | 2.71875 |