| ( | Q | − | ( | 1500 | + | 3 20 | Q | ) | + | 300 | ) | × | 3 4 | + | 3059 5 | = | 16536 25 |
| 方程左边 = | Q | × | 3 4 | − | ( | 1500 | + | 3 20 | Q | ) | × | 3 4 | + | 300 | × | 3 4 | + | 3059 5 |
| = | Q | × | 3 4 | − | ( | 1500 | + | 3 20 | Q | ) | × | 3 4 | + | 225 | + | 3059 5 |
| = | 3 4 | Q | − | ( | 1500 | + | 3 20 | Q | ) | × | 3 4 | + | 4184 5 |
| = | 3 4 | Q | − | 1500 | × | 3 4 | − | 3 20 | Q | × | 3 4 | + | 4184 5 |
| = | 3 4 | Q | − | 1125 | − | 9 80 | Q | + | 4184 5 |
| = | 51 80 | Q | − | 1441 5 |
51 80 | Q | − | 1441 5 | = | 16536 25 |
51 80 | Q | = | 16536 25 | + | 1441 5 |
51 80 | Q | = | 23741 25 |
| Q | = | 23741 25 | ÷ | 51 80 |
| = | 23741 25 | × | 80 51 |
| = | 23741 5 | × | 16 51 |
| Q | = | 379856 255 |
| Q | = | 1489.631373 |