| ( | 100 | − | 69 | + | x | ÷ | 4 | × | 1 5 | ) | × | 31699 10000 | − | x | = | 0 |
| 方程左边 = | 100 | × | 31699 10000 | − | 69 | × | 31699 10000 | + | x | ÷ | 4 | × | 1 5 | × | 31699 10000 | − | x |
| = | 31699 100 | − | 2187231 10000 | + | x | × | 31699 200000 | − | x |
| = | 982669 10000 | − | 168301 200000 | x |
982669 10000 | − | 168301 200000 | x | = | 0 |
| - | 168301 200000 | x | = | 0 | − | 982669 10000 |
| - | 168301 200000 | x | = | - | 982669 10000 |
982669 10000 | = | 168301 200000 | x |
168301 200000 | x | = | 982669 10000 |
| x | = | 982669 10000 | ÷ | 168301 200000 |
| = | 982669 10000 | × | 200000 168301 |
| = | 982669 | × | 20 168301 |
| x | = | 19653380 168301 |
| x | = | 116.775183 |