11 50 | = | 1 40 | + | 13 10 | ( | x | − | 1 40 | ) |
| Right side of the equation = | 1 40 | + | 13 10 | x | − | 13 10 | × | 1 40 |
| = | 1 40 | + | 13 10 | x | − | 13 400 |
| = | - | 3 400 | + | 13 10 | x |
11 50 | = | - | 3 400 | + | 13 10 | x |
| - | 13 10 | x | = | - | 3 400 | − | 11 50 |
| - | 13 10 | x | = | - | 91 400 |
91 400 | = | 13 10 | x |
13 10 | x | = | 91 400 |
| x | = | 91 400 | ÷ | 13 10 |
| = | 91 400 | × | 10 13 |
| = | 7 40 | × | 1 |
| x | = | 7 40 |
| x | = | 0.175 |