15 100 | = | ( | 1 | − | ( | 1568555337 1000 | − | X | ) | ÷ | ( | 92267961 50 | − | X | ) | ) | × | 100 100 |
15 100 | = | 1 | × | 100 100 | − | ( | 1568555337 1000 | − | X | ) | ÷ | ( | 92267961 50 | − | X | ) | × | 100 100 |
15 100 | = | 1 | − | ( | 1568555337 1000 | − | X | ) | ÷ | ( | 92267961 50 | − | X | ) | × | 100 100 |
| 方程两边同时乘以: | ( | 92267961 50 | − | X | ) |
15 100 | ( | 92267961 50 | − | X | ) | = | 1 | ( | 92267961 50 | − | X | ) | − | ( | 1568555337 1000 | − | X | ) | × | 100 100 |
15 100 | × | 92267961 50 | − | 15 100 | X | = | 1 | ( | 92267961 50 | − | X | ) | − | ( | 1568555337 1000 | − | X | ) | × | 100 100 |
15 100 | × | 92267961 50 | − | 15 100 | X | = | 1 | × | 92267961 50 | − | 1 | X | − | ( | 1568555337 1000 | − | X | ) | × | 100 100 |
276803883 1000 | − | 15 100 | X | = | 92267961 50 | − | 1 | X | − | ( | 1568555337 1000 | − | X | ) | × | 100 100 |
276803883 1000 | − | 15 100 | X | = | 92267961 50 | − | 1 | X | − | 1568555337 1000 | × | 100 100 | + | X | × | 100 100 |