| ( | 1 | ÷ | ( | 1 | + | 13 1000 | x | ) | ) | × | 67 1000 | x | − | 3173 1000 | = | 137 250 |
| 1 | ÷ | ( | 1 | + | 13 1000 | x | ) | × | 67 1000 | x | − | 3173 1000 | = | 137 250 |
67 1000 | ÷ | ( | 1 | + | 13 1000 | x | ) | × | x | − | 3173 1000 | = | 137 250 |
| 方程两边同时乘以: | ( | 1 | + | 13 1000 | x | ) |
67 1000 | x | − | 3173 1000 | ( | 1 | + | 13 1000 | x | ) | = | 137 250 | ( | 1 | + | 13 1000 | x | ) |
67 1000 | x | − | 3173 1000 | × | 1 | − | 3173 1000 | × | 13 1000 | x | = | 137 250 | ( | 1 | + | 13 1000 | x | ) |
67 1000 | x | − | 3173 1000 | × | 1 | − | 3173 1000 | × | 13 1000 | x | = | 137 250 | × | 1 | + | 137 250 | × | 13 1000 | x |
67 1000 | x | − | 3173 1000 | − | 41249 1000000 | x | = | 137 250 | + | 1781 250000 | x |
25751 1000000 | x | − | 3173 1000 | = | 137 250 | + | 1781 250000 | x |
25751 1000000 | x | − | 1781 250000 | x | = | 137 250 | + | 3173 1000 |
| x1= | √399055693 100 |