| ( | 3874 | + | 650 | − | 1102 | ) | ÷ | 3874 | = | x | ÷ | 2243 10 |
| 方程左边 = | 3874 | × | 1 3874 | + | 650 | × | 1 3874 | − | 1102 | × | 1 3874 |
| = | 1 | + | 25 149 | − | 551 1937 |
| = | 1711 1937 |
1711 1937 | = | x | ÷ | 2243 10 |
| - | 10 2243 | x | = | - | 1711 1937 |
1711 1937 | = | 10 2243 | x |
10 2243 | x | = | 1711 1937 |
| x | = | 1711 1937 | ÷ | 10 2243 |
| = | 1711 1937 | × | 2243 10 |
| x | = | 3837773 19370 |
| x | = | 198.129737 |