67 1000 | ( | 7283 100 | − | y | ) | + | 57 1000 | y | = | 1041 250 |
| Left side of the equation = | 67 1000 | × | 7283 100 | − | 67 1000 | y | + | 57 1000 | y |
| = | 487961 100000 | − | 67 1000 | y | + | 57 1000 | y |
| = | 487961 100000 | − | 1 100 | y |
487961 100000 | − | 1 100 | y | = | 1041 250 |
| - | 1 100 | y | = | 1041 250 | − | 487961 100000 |
| - | 1 100 | y | = | - | 71561 100000 |
71561 100000 | = | 1 100 | y |
1 100 | y | = | 71561 100000 |
| y | = | 71561 100000 | ÷ | 1 100 |
| = | 71561 100000 | × | 100 |
| = | 71561 1000 | × | 1 |
| y | = | 71561 1000 |
| y | = | 71.561 |