| ( | X | ÷ | 3 100 | × | 3 100 | ) | + | ( | 29892299 50 | − | X | ) | ÷ | 13 100 | × | 13 100 | = | 892133 25 |
| Left side of the equation = | ( | X | ÷ | 3 100 | × | 3 100 | ) | + | ( | 29892299 50 | − | X | ) | × | 1 |
| ( | X | ÷ | 3 100 | × | 3 100 | ) | + | ( | 29892299 50 | − | X | ) | × | 1 | = | 892133 25 |
| Left side of the equation = | X | ÷ | 3 100 | × | 3 100 | + | ( | 29892299 50 | − | X | ) | × | 1 |
| = | X | × | 1 | + | ( | 29892299 50 | − | X | ) | × | 1 |
| = | 1 | X | + | 29892299 50 | × | 1 | − | X | × | 1 |
| = | 1 | X | + | 29892299 50 | − | X | × | 1 |
| = | 0 | X | + | 29892299 50 |
| 0 | X | + | 29892299 50 | = | 892133 25 |
| = | 892133 25 | − | 29892299 50 |