| ( | X | − | 800 | ) | − | 800 | × | 37 1000 | ÷ | 12 | − | ( | X | + | 800 | ) | × | 3 | ÷ | 10000 | − | ( | X | − | 800 | ) | × | 13 100 | × | 3 25 | = | 0 |
| Left side of the equation = | ( | X | − | 800 | ) | − | 37 15 | − | ( | X | + | 800 | ) | × | 3 10000 | − | ( | X | − | 800 | ) | × | 39 2500 |
| ( | X | − | 800 | ) | − | 37 15 | − | ( | X | + | 800 | ) | × | 3 10000 | − | ( | X | − | 800 | ) | × | 39 2500 | = | 0 |
| Left side of the equation = | X | − | 800 | − | 37 15 | − | ( | X | + | 800 | ) | × | 3 10000 | − | ( | X | − | 800 | ) | × | 39 2500 |
| = | X | − | 12037 15 | − | ( | X | + | 800 | ) | × | 3 10000 | − | ( | X | − | 800 | ) | × | 39 2500 |
| = | X | − | 12037 15 | − | X | × | 3 10000 | − | 800 | × | 3 10000 | − | ( | X | − | 800 | ) | × | 39 2500 |
| = | X | − | 12037 15 | − | X | × | 3 10000 | − | 6 25 | − | ( | X | − | 800 | ) | × | 39 2500 |
| = | 9997 10000 | X | − | 60203 75 | − | ( | X | − | 800 | ) | × | 39 2500 |
| = | 9997 10000 | X | − | 60203 75 | − | X | × | 39 2500 | + | 800 | × | 39 2500 |
| = | 9997 10000 | X | − | 60203 75 | − | X | × | 39 2500 | + | 312 25 |
| = | 9841 10000 | X | − | 59267 75 |
9841 10000 | X | − | 59267 75 | = | 0 |
9841 10000 | X | = | 0 | + | 59267 75 |
9841 10000 | X | = | 59267 75 |
| X | = | 59267 75 | ÷ | 9841 10000 |
| = | 59267 75 | × | 10000 9841 |
| = | 4559 3 | × | 400 757 |
| X | = | 1823600 2271 |
| X | = | 802.994276 |