| 200 | x | = | 2000 | + | ( | 160 | + | 78 | ) | x |
| Right side of the equation = | 2000 | + | 160 | x | + | 78 | x |
| = | 2000 | + | 238 | x |
| 200 | x | = | 2000 | + | 238 | x |
| 200 | x | − | 238 | x | = | 2000 |
| - | 38 | x | = | 2000 |
| - | 2000 | = | 38 | x |
| 38 | x | = | - | 2000 |
| x | = | - | 2000 | ÷ | 38 |
| = | - | 2000 | × | 1 38 |
| = | - | 1000 | × | 1 19 |
| x | = | - | 1000 19 |
| x | = | - 52.631579 |