| 373 | + | x | × | 20 | = | ( | x | + | 1 | ) | × | 323 |
| Right side of the equation = | x | × | 323 | + | 1 | × | 323 |
| = | x | × | 323 | + | 323 |
| 373 | + | 20 | x | = | 323 | x | + | 323 |
| 20 | x | − | 323 | x | = | 323 | − | 373 |
| - | 303 | x | = | 323 | − | 373 |
| - | 303 | x | = | - | 50 |
| 50 | = | 303 | x |
| 303 | x | = | 50 |
| x | = | 50 | ÷ | 303 |
| = | 50 | × | 1 303 |
| x | = | 50 303 |
| x | = | 0.165017 |