| 17 | ÷ | 104 | + | 25 | ÷ | 1650 | + | X | ÷ | 200 | + | ( | 105 2 | − | X | ) | ÷ | 1000 | = | 61 200 |
| Left side of the equation = | 17 104 | + | 1 66 | + | X | × | 1 200 | + | ( | 105 2 | − | X | ) | × | 1 1000 |
| = | 613 3432 | + | 1 200 | X | + | ( | 105 2 | − | X | ) | × | 1 1000 |
613 3432 | + | 1 200 | X | + | ( | 105 2 | − | X | ) | × | 1 1000 | = | 61 200 |
| Left side of the equation = | 613 3432 | + | 1 200 | X | + | 105 2 | × | 1 1000 | − | X | × | 1 1000 |
| = | 613 3432 | + | 1 200 | X | + | 21 400 | − | X | × | 1 1000 |
| = | 39659 171600 | + | 1 250 | X |
39659 171600 | + | 1 250 | X | = | 61 200 |
1 250 | X | = | 61 200 | − | 39659 171600 |
1 250 | X | = | 12679 171600 |
| X | = | 12679 171600 | ÷ | 1 250 |
| = | 12679 171600 | × | 250 |
| = | 12679 3432 | × | 5 |
| X | = | 63395 3432 |
| X | = | 18.471737 |