| ( | 6427 200 | − | 30 | ) | ÷ | ( | 60 | − | 6427 200 | ) | = | ( | x | − | 7 10 | ) | ÷ | ( | 637 1000 | − | x | ) |
| 方程两边同时乘以: | ( | 60 | − | 6427 200 | ) | , | ( | 637 1000 | − | x | ) |
| ( | 6427 200 | − | 30 | ) | ( | 637 1000 | − | x | ) | = | ( | x | − | 7 10 | ) | ( | 60 | − | 6427 200 | ) |
6427 200 | ( | 637 1000 | − | x | ) | − | 30 | ( | 637 1000 | − | x | ) | = | ( | x | − | 7 10 | ) | ( | 60 | − | 6427 200 | ) |
6427 200 | ( | 637 1000 | − | x | ) | − | 30 | ( | 637 1000 | − | x | ) | = | x | ( | 60 | − | 6427 200 | ) | − | 7 10 | ( | 60 | − | 6427 200 | ) |
6427 200 | × | 637 1000 | − | 6427 200 | x | − | 30 | ( | 637 1000 | − | x | ) | = | x | ( | 60 | − | 6427 200 | ) | − | 7 10 | ( | 60 | − | 6427 200 | ) |
6427 200 | × | 637 1000 | − | 6427 200 | x | − | 30 | ( | 637 1000 | − | x | ) | = | x | × | 60 | − | x | × | 6427 200 | − | 7 10 | ( | 60 | − | 6427 200 | ) |
4093999 200000 | − | 6427 200 | x | − | 30 | ( | 637 1000 | − | x | ) | = | x | × | 60 | − | x | × | 6427 200 | − | 7 10 | ( | 60 | − | 6427 200 | ) |
4093999 200000 | − | 6427 200 | x | − | 30 | ( | 637 1000 | − | x | ) | = | 5573 200 | x | − | 7 10 | ( | 60 | − | 6427 200 | ) |
4093999 200000 | − | 6427 200 | x | − | 30 | × | 637 1000 | + | 30 | x | = | 5573 200 | x | − | 7 10 | ( | 60 | − | 6427 200 | ) |
4093999 200000 | − | 6427 200 | x | − | 30 | × | 637 1000 | + | 30 | x | = | 5573 200 | x | − | 7 10 | × | 60 | + | 7 10 | × | 6427 200 |
4093999 200000 | − | 6427 200 | x | − | 1911 100 | + | 30 | x | = | 5573 200 | x | − | 42 | + | 44989 2000 |
271999 200000 | − | 427 200 | x | = | 5573 200 | x | − | 39011 2000 |
| - | 427 200 | x | − | 5573 200 | x | = | - | 39011 2000 | − | 271999 200000 |
| - | 30 | x | = | - | 39011 2000 | − | 271999 200000 |
| - | 30 | x | = | - | 4173099 200000 |
4173099 200000 | = | 30 | x |
| 30 | x | = | 4173099 200000 |
| x | = | 4173099 200000 | ÷ | 30 |
| = | 4173099 200000 | × | 1 30 |
| = | 1391033 200000 | × | 1 10 |
| x | = | 1391033 2000000 |
| x | = | 0.695516 |