| x | ÷ | 72 | × | 1000 | = | 5 | ( | 5 | + | x | ÷ | 72 | ÷ | 21 20 | ) |
| Left side of the equation = | x | × | 125 9 |
125 9 | x | = | 5 | ( | 5 | + | x | ÷ | 72 | ÷ | 21 20 | ) |
| Right side of the equation = | 5 | × | 5 | + | 5 | x | ÷ | 72 | ÷ | 21 20 |
| = | 25 | + | 25 378 | x |
125 9 | x | = | 25 | + | 25 378 | x |
125 9 | x | − | 25 378 | x | = | 25 |
5225 378 | x | = | 25 |
| x | = | 25 | ÷ | 5225 378 |
| = | 25 | × | 378 5225 |
| = | 1 | × | 378 209 |
| x | = | 378 209 |
| x | = | 1.808612 |