| 15 | ( | x | + | 600 | ) | + | 49 | x | + | x | ÷ | 12 | × | 22 | = | 738900 |
| 方程左边 = | 15 | ( | x | + | 600 | ) | + | 49 | x | + | x | × | 11 6 |
| = | 15 | ( | x | + | 600 | ) | + | 305 6 | x |
| 15 | ( | x | + | 600 | ) | + | 305 6 | x | = | 738900 |
| 方程左边 = | 15 | x | + | 15 | × | 600 | + | 305 6 | x |
| = | 15 | x | + | 9000 | + | 305 6 | x |
| = | 395 6 | x | + | 9000 |
395 6 | x | + | 9000 | = | 738900 |
395 6 | x | = | 738900 | − | 9000 |
395 6 | x | = | 729900 |
| x | = | 729900 | ÷ | 395 6 |
| = | 729900 | × | 6 395 |
| = | 145980 | × | 6 79 |
| x | = | 875880 79 |
| x | = | 11087.088608 |