| ( | 5171 10 | − | y | ) | ÷ | y | = | 7 100 |
| Multiply both sides of the equation by: | y |
| ( | 5171 10 | − | y | ) | = | 7 100 | y |
5171 10 | − | y | = | 7 100 | y |
| - | y | − | 7 100 | y | = | - | 5171 10 |
| - | 107 100 | y | = | - | 5171 10 |
5171 10 | = | 107 100 | y |
107 100 | y | = | 5171 10 |
| y | = | 5171 10 | ÷ | 107 100 |
| = | 5171 10 | × | 100 107 |
| = | 5171 | × | 10 107 |
| y | = | 51710 107 |
| y | = | 483.271028 |