70 100 | = | ( | X | + | 40 100 | + | 9 100 | + | 7 100 | ) | + | 9 200 | ( | X | + | 40 100 | + | 9 100 | + | 7 100 | ) |
| Right side of the equation = | X | + | 40 100 | + | 9 100 | + | 7 100 | + | 9 200 | ( | X | + | 40 100 | + | 9 100 | + | 7 100 | ) |
| = | X | + | 14 25 | + | 9 200 | ( | X | + | 40 100 | + | 9 100 | + | 7 100 | ) |
| = | X | + | 14 25 | + | 9 200 | X | + | 9 200 | × | 40 100 | + | 9 200 | × | 9 100 | + | 9 200 | × | 7 100 |
| = | X | + | 14 25 | + | 9 200 | X | + | 9 500 | + | 81 20000 | + | 63 20000 |
| = | 209 200 | X | + | 1463 2500 |
70 100 | = | 209 200 | X | + | 1463 2500 |
| - | 209 200 | X | = | 1463 2500 | − | 70 100 |
| - | 209 200 | X | = | - | 287 2500 |
287 2500 | = | 209 200 | X |
209 200 | X | = | 287 2500 |
| X | = | 287 2500 | ÷ | 209 200 |
| = | 287 2500 | × | 200 209 |
| = | 287 25 | × | 2 209 |
| X | = | 574 5225 |
| X | = | 0.109856 |