| ( | 63 1000 | − | x | ) | ÷ | x | = | 143 25 |
| Multiply both sides of the equation by: | x |
| ( | 63 1000 | − | x | ) | = | 143 25 | x |
63 1000 | − | x | = | 143 25 | x |
| - | x | − | 143 25 | x | = | - | 63 1000 |
| - | 168 25 | x | = | - | 63 1000 |
63 1000 | = | 168 25 | x |
168 25 | x | = | 63 1000 |
| x | = | 63 1000 | ÷ | 168 25 |
| = | 63 1000 | × | 25 168 |
| = | 3 40 | × | 1 8 |
| x | = | 3 320 |
| x | = | 0.009375 |