177 1000000000000 | = | ( | 1 125 | − | x | ) | ( | 67 5000 | − | x | ) |
| Right side of the equation = | 1 125 | ( | 67 5000 | − | x | ) | − | x | ( | 67 5000 | − | x | ) |
| = | 1 125 | × | 67 5000 | − | 1 125 | x | − | x | ( | 67 5000 | − | x | ) |
| = | 67 625000 | − | 1 125 | x | − | x | ( | 67 5000 | − | x | ) |
| = | 67 625000 | − | 1 125 | x | − | x | × | 67 5000 | + | x | x |
| = | 67 625000 | − | 107 5000 | x | + | x | x |
177 1000000000000 | = | 67 625000 | − | 107 5000 | x | + | x | x |