| 43600 | = | ( | 13 2 | − | x | ) | × | 2000 | + | ( | 6 | − | x | ) | × | 14000 |
| Right side of the equation = | 13 2 | × | 2000 | − | x | × | 2000 | + | ( | 6 | − | x | ) | × | 14000 |
| = | 13000 | − | x | × | 2000 | + | ( | 6 | − | x | ) | × | 14000 |
| = | 13000 | − | 2000 | x | + | 6 | × | 14000 | − | x | × | 14000 |
| = | 13000 | − | 2000 | x | + | 84000 | − | x | × | 14000 |
| = | 97000 | − | 16000 | x |
| 43600 | = | 97000 | − | 16000 | x |
| 16000 | x | = | 97000 | − | 43600 |
| 16000 | x | = | 53400 |
| x | = | 53400 | ÷ | 16000 |
| = | 53400 | × | 1 16000 |
| = | 267 | × | 1 80 |
| x | = | 267 80 |
| x | = | 3.3375 |