| ( | x | − | 2 25 | ) | ÷ | ( | 7 100 | − | 2 25 | ) | = | ( | 4 | − | 39927 10000 | ) | ÷ | ( | 4 | − | 39927 10000 | ) | ÷ | ( | 2001 500 | − | 39927 10000 | ) |
| 方程两边同时乘以: | ( | 7 100 | − | 2 25 | ) | , | ( | 4 | − | 39927 10000 | ) |
| ( | x | − | 2 25 | ) | ( | 4 | − | 39927 10000 | ) | = | ( | 4 | − | 39927 10000 | ) | ÷ | ( | 2001 500 | − | 39927 10000 | ) | × | ( | 7 100 | − | 2 25 | ) |
| x | ( | 4 | − | 39927 10000 | ) | − | 2 25 | ( | 4 | − | 39927 10000 | ) | = | ( | 4 | − | 39927 10000 | ) | ÷ | ( | 2001 500 | − | 39927 10000 | ) | × | ( | 7 100 | − | 2 25 | ) |
| x | ( | 4 | − | 39927 10000 | ) | − | 2 25 | ( | 4 | − | 39927 10000 | ) | = | 4 | ÷ | ( | 2001 500 | − | 39927 10000 | ) | × | ( | 7 100 | − | 2 25 | ) | − | 39927 10000 | ÷ | ( | 2001 500 | − | 39927 10000 | ) | × | ( | 7 100 | − | 2 25 | ) |
| 方程两边同时乘以: | ( | 2001 500 | − | 39927 10000 | ) |
| x | ( | 4 | − | 39927 10000 | ) | ( | 2001 500 | − | 39927 10000 | ) | − | 2 25 | ( | 4 | − | 39927 10000 | ) | ( | 2001 500 | − | 39927 10000 | ) | = | 4 | ( | 7 100 | − | 2 25 | ) | − | 39927 10000 | ÷ | ( | 2001 500 | − | 39927 10000 | ) | × | ( | 7 100 | − | 2 25 | ) | ( | 2001 500 | − | 39927 10000 | ) |
| x | × | 4 | ( | 2001 500 | − | 39927 10000 | ) | − | x | × | 39927 10000 | ( | 2001 500 | − | 39927 10000 | ) | − | 2 25 | ( | 4 | − | 39927 10000 | ) | ( | 2001 500 | − | 39927 10000 | ) | = | 4 | ( | 7 100 | − | 2 25 | ) | − | 39927 10000 | ÷ | ( | 2001 500 | − | 39927 10000 | ) | × | ( | 7 100 | − | 2 25 | ) | ( | 2001 500 | − | 39927 10000 | ) |
| x | × | 4 | ( | 2001 500 | − | 39927 10000 | ) | − | x | × | 39927 10000 | ( | 2001 500 | − | 39927 10000 | ) | − | 2 25 | ( | 4 | − | 39927 10000 | ) | ( | 2001 500 | − | 39927 10000 | ) | = | 4 | × | 7 100 | − | 4 | × | 2 25 | − | 39927 10000 | ÷ | ( | 2001 500 | − | 39927 10000 | ) | × | ( | 7 100 | − | 2 25 | ) | ( | 2001 500 | − | 39927 10000 | ) |
| x | × | 4 | ( | 2001 500 | − | 39927 10000 | ) | − | x | × | 39927 10000 | ( | 2001 500 | − | 39927 10000 | ) | − | 2 25 | ( | 4 | − | 39927 10000 | ) | ( | 2001 500 | − | 39927 10000 | ) | = | 7 25 | − | 8 25 | − | 39927 10000 | ÷ | ( | 2001 500 | − | 39927 10000 | ) | × | ( | 7 100 | − | 2 25 | ) | ( | 2001 500 | − | 39927 10000 | ) |
| x | × | 4 | ( | 2001 500 | − | 39927 10000 | ) | − | x | × | 39927 10000 | ( | 2001 500 | − | 39927 10000 | ) | − | 2 25 | ( | 4 | − | 39927 10000 | ) | ( | 2001 500 | − | 39927 10000 | ) | = | - | 1 25 | − | 39927 10000 | ÷ | ( | 2001 500 | − | 39927 10000 | ) | × | ( | 7 100 | − | 2 25 | ) | ( | 2001 500 | − | 39927 10000 | ) |
| 方程两边同时乘以: | ( | 2001 500 | − | 39927 10000 | ) |
| x | × | 4 | ( | 2001 500 | − | 39927 10000 | ) | ( | 2001 500 | − | 39927 10000 | ) | − | x | × | 39927 10000 | ( | 2001 500 | − | 39927 10000 | ) | ( | 2001 500 | − | 39927 10000 | ) | − | 2 25 | ( | 4 | − | 39927 10000 | ) | ( | 2001 500 | − | 39927 10000 | ) | ( | 2001 500 | − | 39927 10000 | ) | = | - | 1 25 | ( | 2001 500 | − | 39927 10000 | ) | − | 39927 10000 | ( | 7 100 | − | 2 25 | ) | ( | 2001 500 | − | 39927 10000 | ) |
| x | × | 4 | × | 2001 500 | ( | 2001 500 | − | 39927 10000 | ) | − | x | × | 4 | × | 39927 10000 | ( | 2001 500 | − | 39927 10000 | ) | − | x | × | 39927 10000 | ( | 2001 500 | − | 39927 10000 | ) | ( | 2001 500 | − | 39927 10000 | ) | = | - | 1 25 | ( | 2001 500 | − | 39927 10000 | ) | − | 39927 10000 | ( | 7 100 | − | 2 25 | ) | ( | 2001 500 | − | 39927 10000 | ) |
| x | × | 4 | × | 2001 500 | ( | 2001 500 | − | 39927 10000 | ) | − | x | × | 4 | × | 39927 10000 | ( | 2001 500 | − | 39927 10000 | ) | − | x | × | 39927 10000 | ( | 2001 500 | − | 39927 10000 | ) | ( | 2001 500 | − | 39927 10000 | ) | = | - | 1 25 | × | 2001 500 | + | 1 25 | × | 39927 10000 | − | 39927 10000 | ( | 7 100 | − | 2 25 | ) | ( | 2001 500 | − | 39927 10000 | ) |
| x | × | 2001 125 | ( | 2001 500 | − | 39927 10000 | ) | − | x | × | 39927 2500 | ( | 2001 500 | − | 39927 10000 | ) | − | x | × | 39927 10000 | ( | 2001 500 | − | 39927 10000 | ) | ( | 2001 500 | − | 39927 10000 | ) | − | 2 25 | ( | 4 | − | 39927 10000 | ) | = | - | 2001 12500 | + | 39927 250000 | − | 39927 10000 | ( | 7 100 | − | 2 25 | ) | ( | 2001 500 | − | 39927 10000 | ) |
| x | × | 2001 125 | ( | 2001 500 | − | 39927 10000 | ) | − | x | × | 39927 2500 | ( | 2001 500 | − | 39927 10000 | ) | − | x | × | 39927 10000 | ( | 2001 500 | − | 39927 10000 | ) | ( | 2001 500 | − | 39927 10000 | ) | − | 2 25 | ( | 4 | − | 39927 10000 | ) | = | - | 93 250000 | − | 39927 10000 | ( | 7 100 | − | 2 25 | ) | ( | 2001 500 | − | 39927 10000 | ) |
| x | × | 2001 125 | × | 2001 500 | − | x | × | 2001 125 | × | 39927 10000 | − | x | × | 39927 2500 | ( | 2001 500 | − | 39927 10000 | ) | − | x | × | 39927 10000 | ( | 2001 500 | − | 39927 10000 | ) | = | - | 93 250000 | − | 39927 10000 | ( | 7 100 | − | 2 25 | ) | ( | 2001 500 | − | 39927 10000 | ) |
| x | × | 2001 125 | × | 2001 500 | − | x | × | 2001 125 | × | 39927 10000 | − | x | × | 39927 2500 | ( | 2001 500 | − | 39927 10000 | ) | − | x | × | 39927 10000 | ( | 2001 500 | − | 39927 10000 | ) | = | - | 93 250000 | − | 39927 10000 | × | 7 100 | ( | 2001 500 | − | 39927 10000 | ) | + | 39927 10000 | × | 2 25 | ( | 2001 500 | − | 39927 10000 | ) |
| x | × | 4004001 62500 | − | x | × | 79893927 1250000 | − | x | × | 39927 2500 | ( | 2001 500 | − | 39927 10000 | ) | − | x | × | 39927 10000 | ( | 2001 500 | − | 39927 10000 | ) | ( | 2001 500 | − | 39927 10000 | ) | − | 2 25 | = | - | 93 250000 | − | 279489 1000000 | ( | 2001 500 | − | 39927 10000 | ) | + | 39927 125000 | ( | 2001 500 | − | 39927 10000 | ) |