| x | − | 400 | + | ( | ( | 0 | − | 203 1000 | × | 12 | − | 7 25 | × | 12 | ) | − | ( | 8 5 | + | 4 | ) | + | x | × | 1 50 | − | 153 20 | ) | × | 37 | = | 0 |
| 方程左边 = | x | − | 400 | + | ( | 0 | − | 203 1000 | × | 12 | − | 7 25 | × | 12 | ) | × | 37 | − | ( | 8 5 | + | 4 | ) | × | 37 | + | x | × | 1 50 | × | 37 | − | 153 20 | × | 37 |
| = | x | − | 400 | + | ( | 0 | − | 203 1000 | × | 12 | − | 7 25 | × | 12 | ) | × | 37 | − | ( | 8 5 | + | 4 | ) | × | 37 | + | x | × | 37 50 | − | 5661 20 |
| = | 87 50 | x | − | 13661 20 | + | ( | 0 | − | 203 1000 | × | 12 | − | 7 25 | × | 12 | ) | × | 37 | − | ( | 8 5 | + | 4 | ) | × | 37 |
| = | 87 50 | x | − | 13661 20 | + | 0 | × | 37 | − | 203 1000 | × | 12 | × | 37 | − | 7 25 | × | 12 | × | 37 | − | ( | 8 5 | + | 4 | ) |
| = | 87 50 | x | − | 13661 20 | + | 0 | − | 22533 250 | − | 3108 25 | − | ( | 8 5 | + | 4 | ) | × | 37 |
| = | 87 50 | x | − | 448751 500 | − | ( | 8 5 | + | 4 | ) | × | 37 |
| = | 87 50 | x | − | 448751 500 | − | 8 5 | × | 37 | − | 4 | × | 37 |
| = | 87 50 | x | − | 448751 500 | − | 296 5 | − | 148 |
| = | 87 50 | x | − | 552351 500 |
87 50 | x | − | 552351 500 | = | 0 |
87 50 | x | = | 0 | + | 552351 500 |
87 50 | x | = | 552351 500 |
| x | = | 552351 500 | ÷ | 87 50 |
| = | 552351 500 | × | 50 87 |
| = | 184117 10 | × | 1 29 |
| x | = | 184117 290 |
| x | = | 634.886207 |