| X | − | X | × | 13 20000 | − | ( | X | + | 5 | ) | × | 3 10000 | = | 5 |
| Left side of the equation = | 19987 20000 | X | − | ( | X | + | 5 | ) | × | 3 10000 |
19987 20000 | X | − | ( | X | + | 5 | ) | × | 3 10000 | = | 5 |
| Left side of the equation = | 19987 20000 | X | − | X | × | 3 10000 | − | 5 | × | 3 10000 |
| = | 19987 20000 | X | − | X | × | 3 10000 | − | 3 2000 |
| = | 19981 20000 | X | − | 3 2000 |
19981 20000 | X | − | 3 2000 | = | 5 |
19981 20000 | X | = | 5 | + | 3 2000 |
19981 20000 | X | = | 10003 2000 |
| X | = | 10003 2000 | ÷ | 19981 20000 |
| = | 10003 2000 | × | 20000 19981 |
| = | 10003 | × | 10 19981 |
| X | = | 100030 19981 |
| X | = | 5.006256 |