| ( | 223532 25 | + | 15 | + | X | ) | × | 7 200 | = | 4 | X |
| Left side of the equation = | 223532 25 | × | 7 200 | + | 15 | × | 7 200 | + | X | × | 7 200 |
| = | 391181 1250 | + | 21 40 | + | X | × | 7 200 |
| = | 1567349 5000 | + | 7 200 | X |
1567349 5000 | + | 7 200 | X | = | 4 | X |
7 200 | X | − | 4 | X | = | - | 1567349 5000 |
| - | 793 200 | X | = | - | 1567349 5000 |
1567349 5000 | = | 793 200 | X |
793 200 | X | = | 1567349 5000 |
| X | = | 1567349 5000 | ÷ | 793 200 |
| = | 1567349 5000 | × | 200 793 |
| = | 1567349 25 | × | 1 793 |
| X | = | 1567349 19825 |
| X | = | 79.059218 |