| 2800000 | + | 7071 50 | × | 1825 | x | + | ( | 240 | − | x | ) | × | 1307 25 | × | 1825 | = | 1825 | × | 300 | x |
| 方程左边 = | 2800000 | + | 516183 2 | x | + | ( | 240 | − | x | ) | × | 95411 |
| 2800000 | + | 516183 2 | x | + | ( | 240 | − | x | ) | × | 95411 | = | 1825 | × | 300 | x |
| 方程左边 = | 2800000 | + | 516183 2 | x | + | 240 | × | 95411 | − | x | × | 95411 |
| = | 2800000 | + | 516183 2 | x | + | 22898640 | − | x | × | 95411 |
| = | 25698640 | + | 325361 2 | x |
| 25698640 | + | 325361 2 | x | = | 1825 | × | 300 | x |
| 方程右边 = | 547500 | x |
| 25698640 | + | 325361 2 | x | = | 547500 | x |
325361 2 | x | − | 547500 | x | = | - | 25698640 |
| - | 769639 2 | x | = | - | 25698640 |
| 25698640 | = | 769639 2 | x |
769639 2 | x | = | 25698640 |
| x | = | 25698640 | ÷ | 769639 2 |
| = | 25698640 | × | 2 769639 |
| x | = | 51397280 769639 |
| x | = | 66.781023 |