| ( | 831 | × | 111 200 | + | x | ) | ÷ | ( | 831 | + | x | ) | = | 3 5 |
| 方程两边同时乘以: | ( | 831 | + | x | ) |
| ( | 831 | × | 111 200 | + | x | ) | = | 3 5 | ( | 831 | + | x | ) |
| 831 | × | 111 200 | + | x | = | 3 5 | ( | 831 | + | x | ) |
| 831 | × | 111 200 | + | x | = | 3 5 | × | 831 | + | 3 5 | x |
92241 200 | + | x | = | 2493 5 | + | 3 5 | x |
| x | − | 3 5 | x | = | 2493 5 | − | 92241 200 |
2 5 | x | = | 2493 5 | − | 92241 200 |
2 5 | x | = | 7479 200 |
| x | = | 7479 200 | ÷ | 2 5 |
| = | 7479 200 | × | 5 2 |
| = | 7479 40 | × | 1 2 |
| x | = | 7479 80 |
| x | = | 93.4875 |