| ( | 5 | + | 50 | X | ) | ÷ | 11 | = | ( | 6 | + | 84 | ) | ÷ | 12 |
| Left side of the equation = | 5 | × | 1 11 | + | 50 | X | × | 1 11 |
| = | 5 11 | + | 50 11 | X |
5 11 | + | 50 11 | X | = | ( | 6 | + | 84 | ) | ÷ | 12 |
| Right side of the equation = | 6 | × | 1 12 | + | 84 | × | 1 12 |
| = | 1 2 | + | 7 |
| = | 15 2 |
5 11 | + | 50 11 | X | = | 15 2 |
50 11 | X | = | 15 2 | − | 5 11 |
50 11 | X | = | 155 22 |
| X | = | 155 22 | ÷ | 50 11 |
| = | 155 22 | × | 11 50 |
| = | 31 2 | × | 1 10 |
| X | = | 31 20 |
| X | = | 1.55 |