| 4700 | ( | 600 | − | x | ) | + | 7900 | x | = | 49450 |
| Left side of the equation = | 4700 | × | 600 | − | 4700 | x | + | 7900 | x |
| = | 2820000 | − | 4700 | x | + | 7900 | x |
| = | 2820000 | + | 3200 | x |
| 2820000 | + | 3200 | x | = | 49450 |
| 3200 | x | = | 49450 | − | 2820000 |
| 3200 | x | = | - | 2770550 |
| x | = | - | 2770550 | ÷ | 3200 |
| = | - | 2770550 | × | 1 3200 |
| = | - | 55411 | × | 1 64 |
| x | = | - | 55411 64 |
| x | = | - 865.796875 |