| 12 | ÷ | 103 | + | 27 | ÷ | 200 | + | X | ÷ | 1000 | + | ( | 117 2 | − | X | ) | ÷ | 1650 | = | 3 10 |
| Left side of the equation = | 12 103 | + | 27 200 | + | X | × | 1 1000 | + | ( | 117 2 | − | X | ) | × | 1 1650 |
| = | 5181 20600 | + | 1 1000 | X | + | ( | 117 2 | − | X | ) | × | 1 1650 |
5181 20600 | + | 1 1000 | X | + | ( | 117 2 | − | X | ) | × | 1 1650 | = | 3 10 |
| Left side of the equation = | 5181 20600 | + | 1 1000 | X | + | 117 2 | × | 1 1650 | − | X | × | 1 1650 |
| = | 5181 20600 | + | 1 1000 | X | + | 39 1100 | − | X | × | 1 1650 |
| = | 2601 9064 | + | 13 33000 | X |
2601 9064 | + | 13 33000 | X | = | 3 10 |
13 33000 | X | = | 3 10 | − | 2601 9064 |
13 33000 | X | = | 591 45320 |
| X | = | 591 45320 | ÷ | 13 33000 |
| = | 591 45320 | × | 33000 13 |
| = | 591 103 | × | 75 13 |
| X | = | 44325 1339 |
| X | = | 33.103062 |