| ( | 155 | x | + | 172 5 | × | 26 | ) | ÷ | ( | 155 | + | 26 | ) | = | 227 10 |
| 方程两边同时乘以: | ( | 155 | + | 26 | ) |
| ( | 155 | x | + | 172 5 | × | 26 | ) | = | 227 10 | ( | 155 | + | 26 | ) |
| 155 | x | + | 172 5 | × | 26 | = | 227 10 | ( | 155 | + | 26 | ) |
| 155 | x | + | 172 5 | × | 26 | = | 227 10 | × | 155 | + | 227 10 | × | 26 |
| 155 | x | + | 4472 5 | = | 7037 2 | + | 2951 5 |
| 155 | x | + | 4472 5 | = | 41087 10 |
| 155 | x | = | 41087 10 | − | 4472 5 |
| 155 | x | = | 32143 10 |
| x | = | 32143 10 | ÷ | 155 |
| = | 32143 10 | × | 1 155 |
| x | = | 32143 1550 |
| x | = | 20.737419 |
| ( | 155 | x | + | 79 2 | × | 31 | ) | ÷ | ( | 155 | + | 31 | ) | = | 132 5 |
| 方程两边同时乘以: | ( | 155 | + | 31 | ) |
| ( | 155 | x | + | 79 2 | × | 31 | ) | = | 132 5 | ( | 155 | + | 31 | ) |
| 155 | x | + | 79 2 | × | 31 | = | 132 5 | ( | 155 | + | 31 | ) |
| 155 | x | + | 79 2 | × | 31 | = | 132 5 | × | 155 | + | 132 5 | × | 31 |
| 155 | x | + | 2449 2 | = | 4092 | + | 4092 5 |
| 155 | x | + | 2449 2 | = | 24552 5 |
| 155 | x | = | 24552 5 | − | 2449 2 |
| 155 | x | = | 36859 10 |
| x | = | 36859 10 | ÷ | 155 |
| = | 36859 10 | × | 1 155 |
| x | = | 36859 1550 |
| x | = | 1189 50 |
| x | = | 23.78 |