| ( | X | + | 500 | ÷ | 12 | ) | × | 85 | + | 299 | X | + | ( | X | − | 300 | ÷ | 12 | ) | × | 48 | = | 382592 |
| 方程左边 = | X | × | 85 | + | 500 | ÷ | 12 | × | 85 | + | 299 | X | + | ( | X | − | 300 | ÷ | 12 | ) | × | 48 |
| = | X | × | 85 | + | 10625 3 | + | 299 | X | + | ( | X | − | 300 | ÷ | 12 | ) | × | 48 |
| = | 384 | X | + | 10625 3 | + | ( | X | − | 300 | ÷ | 12 | ) | × | 48 |
| = | 384 | X | + | 10625 3 | + | X | × | 48 | − | 300 | ÷ | 12 | × | 48 |
| = | 384 | X | + | 10625 3 | + | X | × | 48 | − | 1200 |
| = | 432 | X | + | 7025 3 |
| 432 | X | + | 7025 3 | = | 382592 |
| 432 | X | = | 382592 | − | 7025 3 |
| 432 | X | = | 1140751 3 |
| X | = | 1140751 3 | ÷ | 432 |
| = | 1140751 3 | × | 1 432 |
| X | = | 1140751 1296 |
| X | = | 880.209105 |