| X | − | 1 5 | X | − | 1 20 | X | − | 3 | = | 58 | + | 1 5 | × | 58 |
| Left side of the equation = | 3 4 | X | − | 3 |
3 4 | X | − | 3 | = | 58 | + | 1 5 | × | 58 |
| Right side of the equation = | 58 | + | 58 5 |
| = | 348 5 |
3 4 | X | − | 3 | = | 348 5 |
3 4 | X | = | 348 5 | + | 3 |
3 4 | X | = | 363 5 |
| X | = | 363 5 | ÷ | 3 4 |
| = | 363 5 | × | 4 3 |
| = | 121 5 | × | 4 |
| X | = | 484 5 |
| X | = | 96.8 |