| ( | 260 | × | 63 | − | 2400 | + | 99 | × | 3 | − | x | ) | × | 19 20  | = | 271263 20  | 
| Left side of the equation = | 260 | × | 63 | × | 19 20  | − | 2400 | × | 19 20  | + | 99 | × | 3 | × | 19 20  | − | x | × | 19 20  | 
| = | 15561 | − | 2280 | + | 5643 20  | − | x | × | 19 20  | 
| = | 271263 20  | − | 19 20  | x | 
271263 20  | − | 19 20  | x | = | 271263 20  | 
| - | 19 20  | x | = | 271263 20  | − | 271263 20  | 
| - | 19 20  | x | = | 0 | 
| - | 0 | = | 19 20  | x | 
19 20  | x | = | - | 0 | 
| x | = | - | 0 | ÷ | 19 20  | 
| = | - | 0 | × | 20 19  | 
| = | - | 0 | × | 1 19  | 
| x | = | 0 |