| ( | 1661 100 | − | 619 50 | ) | ÷ | ( | 841 10 | − | 853 10 | ) | = | ( | 359 25 | − | 619 50 | ) | ÷ | ( | x | − | 853 10 | ) |
| 方程两边同时乘以: | ( | 841 10 | − | 853 10 | ) | , | ( | x | − | 853 10 | ) |
| ( | 1661 100 | − | 619 50 | ) | ( | x | − | 853 10 | ) | = | ( | 359 25 | − | 619 50 | ) | ( | 841 10 | − | 853 10 | ) |
1661 100 | ( | x | − | 853 10 | ) | − | 619 50 | ( | x | − | 853 10 | ) | = | ( | 359 25 | − | 619 50 | ) | ( | 841 10 | − | 853 10 | ) |
1661 100 | ( | x | − | 853 10 | ) | − | 619 50 | ( | x | − | 853 10 | ) | = | 359 25 | ( | 841 10 | − | 853 10 | ) | − | 619 50 | ( | 841 10 | − | 853 10 | ) |
1661 100 | x | − | 1661 100 | × | 853 10 | − | 619 50 | ( | x | − | 853 10 | ) | = | 359 25 | ( | 841 10 | − | 853 10 | ) | − | 619 50 | ( | 841 10 | − | 853 10 | ) |
1661 100 | x | − | 1661 100 | × | 853 10 | − | 619 50 | ( | x | − | 853 10 | ) | = | 359 25 | × | 841 10 | − | 359 25 | × | 853 10 | − | 619 50 | ( | 841 10 | − | 853 10 | ) |
1661 100 | x | − | 1416833 1000 | − | 619 50 | ( | x | − | 853 10 | ) | = | 301919 250 | − | 306227 250 | − | 619 50 | ( | 841 10 | − | 853 10 | ) |
1661 100 | x | − | 1416833 1000 | − | 619 50 | ( | x | − | 853 10 | ) | = | - | 2154 125 | − | 619 50 | ( | 841 10 | − | 853 10 | ) |
1661 100 | x | − | 1416833 1000 | − | 619 50 | x | + | 619 50 | × | 853 10 | = | - | 2154 125 | − | 619 50 | ( | 841 10 | − | 853 10 | ) |
1661 100 | x | − | 1416833 1000 | − | 619 50 | x | + | 619 50 | × | 853 10 | = | - | 2154 125 | − | 619 50 | × | 841 10 | + | 619 50 | × | 853 10 |
1661 100 | x | − | 1416833 1000 | − | 619 50 | x | + | 528007 500 | = | - | 2154 125 | − | 520579 500 | + | 528007 500 |
423 100 | x | − | 360819 1000 | = | - | 297 125 |
423 100 | x | = | - | 297 125 | + | 360819 1000 |
423 100 | x | = | 358443 1000 |
| x | = | 358443 1000 | ÷ | 423 100 |
| = | 358443 1000 | × | 100 423 |
| = | 39827 10 | × | 1 47 |
| x | = | 39827 470 |
| x | = | 84.738298 |