9 10 | × | 657 25 | × | 390 | × | 60 | + | 377 20 | × | 390 | ( | x | − | 60 | ) | = | ( | 509 | × | 640 | ( | 5 4 | x | − | 195 | ) | ) | ÷ | 5 4 | × | x |
| Left side of the equation = | 2767284 5 | + | 14703 2 | ( | x | − | 60 | ) |
2767284 5 | + | 14703 2 | ( | x | − | 60 | ) | = | ( | 509 | × | 640 | ( | 5 4 | x | − | 195 | ) | ) | ÷ | 5 4 | × | x |
| Left side of the equation = | 2767284 5 | + | 14703 2 | x | − | 14703 2 | × | 60 |
| = | 2767284 5 | + | 14703 2 | x | − | 441090 |
| = | 561834 5 | + | 14703 2 | x |
561834 5 | + | 14703 2 | x | = | ( | 509 | × | 640 | ( | 5 4 | x | − | 195 | ) | ) | ÷ | 5 4 | × | x |
| Right side of the equation = | 509 | × | 640 | ( | 5 4 | x | − | 195 | ) | × | 4 5 | x |
| = | 260608 | ( | 5 4 | x | − | 195 | ) | x |
| = | 260608 | × | 5 4 | x | x | − | 260608 | × | 195 | x |
| = | 325760 | x | x | − | 50818560 | x |
561834 5 | + | 14703 2 | x | = | 325760 | x | x | − | 50818560 | x |