| ( | 149 | x | ) | ÷ | 138 | + | ( | 208 | ÷ | 197 | ) | ( | 85 | − | x | ) | = | 927 10 |
| 方程左边 = | 149 | x | × | 1 138 | + | ( | 208 | ÷ | 197 | ) | ( | 85 | − | x | ) |
| = | 149 138 | x | + | ( | 208 | ÷ | 197 | ) | ( | 85 | − | x | ) |
| = | 149 138 | x | + | 208 | ÷ | 197 | × | ( | 85 | − | x | ) |
| = | 149 138 | x | + | 208 197 | ( | 85 | − | x | ) |
| = | 149 138 | x | + | 208 197 | × | 85 | − | 208 197 | x |
| = | 149 138 | x | + | 17680 197 | − | 208 197 | x |
| = | 649 27186 | x | + | 17680 197 |
649 27186 | x | + | 17680 197 | = | 927 10 |
649 27186 | x | = | 927 10 | − | 17680 197 |
649 27186 | x | = | 5819 1970 |
| x | = | 5819 1970 | ÷ | 649 27186 |
| = | 5819 1970 | × | 27186 649 |
| = | 529 985 | × | 13593 59 |
| x | = | 7190697 58115 |
| x | = | 36501 295 |
| x | = | 123.732203 |