| x | ÷ | 53 50 | × | 3 50 | × | 1 2 | × | 17 20 | = | 13 500 | × | 17 20 | x |
| Left side of the equation = | x | × | 51 2120 |
51 2120 | x | = | 13 500 | × | 17 20 | x |
| Right side of the equation = | 221 10000 | x |
51 2120 | x | = | 221 10000 | x |
51 2120 | x | − | 221 10000 | x | = | 0 |
1037 530000 | x | = | 0 |
| x | = | 0 | ÷ | 1037 530000 |
| = | 0 | × | 530000 1037 |
| x | = | 0 |