| X | × | 30 | × | 12 | + | X | × | 40 100 | × | 60 | × | 12 | = | X | × | 60 | × | 4 | + | X | × | 20 | × | 12 | + | 2400 |
| Left side of the equation = | X | × | 360 | + | X | × | 288 |
| = | 648 | X |
| 648 | X | = | X | × | 60 | × | 4 | + | X | × | 20 | × | 12 | + | 2400 |
| Right side of the equation = | X | × | 240 | + | X | × | 240 | + | 2400 |
| = | 480 | X | + | 2400 |
| 648 | X | = | 480 | X | + | 2400 |
| 648 | X | − | 480 | X | = | 2400 |
| 168 | X | = | 2400 |
| X | = | 2400 | ÷ | 168 |
| = | 2400 | × | 1 168 |
| = | 100 | × | 1 7 |
| X | = | 100 7 |
| X | = | 14.285714 |