| 12 | ÷ | 108 | + | 27 | ÷ | 200 | + | X | ÷ | 1000 | + | ( | 117 2 | − | X | ) | ÷ | 1650 | = | 3 10 |
| Left side of the equation = | 1 9 | + | 27 200 | + | X | × | 1 1000 | + | ( | 117 2 | − | X | ) | × | 1 1650 |
| = | 443 1800 | + | 1 1000 | X | + | ( | 117 2 | − | X | ) | × | 1 1650 |
443 1800 | + | 1 1000 | X | + | ( | 117 2 | − | X | ) | × | 1 1650 | = | 3 10 |
| Left side of the equation = | 443 1800 | + | 1 1000 | X | + | 117 2 | × | 1 1650 | − | X | × | 1 1650 |
| = | 443 1800 | + | 1 1000 | X | + | 39 1100 | − | X | × | 1 1650 |
| = | 223 792 | + | 13 33000 | X |
223 792 | + | 13 33000 | X | = | 3 10 |
13 33000 | X | = | 3 10 | − | 223 792 |
13 33000 | X | = | 73 3960 |
| X | = | 73 3960 | ÷ | 13 33000 |
| = | 73 3960 | × | 33000 13 |
| = | 73 3 | × | 25 13 |
| X | = | 1825 39 |
| X | = | 46.794872 |