| y | = | 1 10 | ( | 211 100 | − | 2 | ) | ( | 211 100 | − | 2 | ) | ÷ | 2 |
| Right side of the equation = | 1 20 | ( | 211 100 | − | 2 | ) | ( | 211 100 | − | 2 | ) |
| y | = | 1 20 | ( | 211 100 | − | 2 | ) | ( | 211 100 | − | 2 | ) |
| Right side of the equation = | 1 20 | × | 211 100 | ( | 211 100 | − | 2 | ) | − | 1 20 | × | 2 | ( | 211 100 | − | 2 | ) |
| = | 211 2000 | ( | 211 100 | − | 2 | ) | − | 1 10 | ( | 211 100 | − | 2 | ) |
| = | 211 2000 | × | 211 100 | − | 211 2000 | × | 2 | − | 1 10 | ( | 211 100 | − | 2 | ) |
| = | 44521 200000 | − | 211 1000 | − | 1 10 | ( | 211 100 | − | 2 | ) |
| = | 2321 200000 | − | 1 10 | ( | 211 100 | − | 2 | ) |
| = | 2321 200000 | − | 1 10 | × | 211 100 | + | 1 10 | × | 2 |
| = | 2321 200000 | − | 211 1000 | + | 1 5 |
| = | 121 200000 |
| y | = | 121 200000 |