| x | × | 4 5 | − | 400 | + | ( | ( | 127 5 | − | 203 1000 | × | 12 | − | 7 25 | × | 12 | ) | − | ( | 8 5 | + | 4 | ) | + | 3 | − | 153 20 | ) | × | 37 | = | 0 |
| 方程左边 = | 4 5 | x | − | 400 | + | ( | 127 5 | − | 203 1000 | × | 12 | − | 7 25 | × | 12 | ) | × | 37 | − | ( | 8 5 | + | 4 | ) | × | 37 | + | 3 | × | 37 | − | 153 20 | × | 37 |
| = | 4 5 | x | − | 400 | + | ( | 127 5 | − | 203 1000 | × | 12 | − | 7 25 | × | 12 | ) | × | 37 | − | ( | 8 5 | + | 4 | ) | × | 37 | + | 111 | − | 5661 20 |
| = | 4 5 | x | − | 11441 20 | + | ( | 127 5 | − | 203 1000 | × | 12 | − | 7 25 | × | 12 | ) | × | 37 | − | ( | 8 5 | + | 4 | ) | × | 37 |
| = | 4 5 | x | − | 11441 20 | + | 127 5 | × | 37 | − | 203 1000 | × | 12 | × | 37 | − | 7 25 | × | 12 | × | 37 | − | ( | 8 5 | + | 4 | ) |
| = | 4 5 | x | − | 11441 20 | + | 4699 5 | − | 22533 250 | − | 3108 25 | − | ( | 8 5 | + | 4 | ) | × | 37 |
| = | 4 5 | x | + | 76649 500 | − | ( | 8 5 | + | 4 | ) | × | 37 |
| = | 4 5 | x | + | 76649 500 | − | 8 5 | × | 37 | − | 4 | × | 37 |
| = | 4 5 | x | + | 76649 500 | − | 296 5 | − | 148 |
| = | 4 5 | x | − | 26951 500 |
4 5 | x | − | 26951 500 | = | 0 |
4 5 | x | = | 0 | + | 26951 500 |
4 5 | x | = | 26951 500 |
| x | = | 26951 500 | ÷ | 4 5 |
| = | 26951 500 | × | 5 4 |
| = | 26951 100 | × | 1 4 |
| x | = | 26951 400 |
| x | = | 67.3775 |