| ( | 173 100 | y | + | 5 | ) | ÷ | 3 | + | 173 100 | y | ÷ | 3 | = | 5 |
| 方程左边 = | ( | 173 100 | y | + | 5 | ) | × | 1 3 | + | 173 300 | y |
| ( | 173 100 | y | + | 5 | ) | × | 1 3 | + | 173 300 | y | = | 5 |
| 方程左边 = | 173 100 | y | × | 1 3 | + | 5 | × | 1 3 | + | 173 300 | y |
| = | 173 300 | y | + | 5 3 | + | 173 300 | y |
| = | 173 150 | y | + | 5 3 |
173 150 | y | + | 5 3 | = | 5 |
173 150 | y | = | 5 | − | 5 3 |
173 150 | y | = | 10 3 |
| y | = | 10 3 | ÷ | 173 150 |
| = | 10 3 | × | 150 173 |
| = | 10 | × | 50 173 |
| y | = | 500 173 |
| y | = | 2.890173 |