| ( | 836 | × | 557 1000 | + | x | ) | ÷ | ( | 836 | + | x | ) | = | 3 5 |
| 方程两边同时乘以: | ( | 836 | + | x | ) |
| ( | 836 | × | 557 1000 | + | x | ) | = | 3 5 | ( | 836 | + | x | ) |
| 836 | × | 557 1000 | + | x | = | 3 5 | ( | 836 | + | x | ) |
| 836 | × | 557 1000 | + | x | = | 3 5 | × | 836 | + | 3 5 | x |
116413 250 | + | x | = | 2508 5 | + | 3 5 | x |
| x | − | 3 5 | x | = | 2508 5 | − | 116413 250 |
2 5 | x | = | 2508 5 | − | 116413 250 |
2 5 | x | = | 8987 250 |
| x | = | 8987 250 | ÷ | 2 5 |
| = | 8987 250 | × | 5 2 |
| = | 8987 50 | × | 1 2 |
| x | = | 8987 100 |
| x | = | 89.87 |