| ( | 64 | + | 2 | y | ) | ( | 45 | − | y | − | 3 5 | ) | = | 924 |
| Left side of the equation = | 64 | ( | 45 | − | y | − | 3 5 | ) | + | 2 | y | ( | 45 | − | y | − | 3 5 | ) |
| = | 64 | × | 45 | − | 64 | y | − | 64 | × | 3 5 | + | 2 | y | ( | 45 | − | y | − | 3 5 | ) |
| = | 2880 | − | 64 | y | − | 192 5 | + | 2 | y | ( | 45 | − | y | − | 3 5 | ) |
| = | 14208 5 | − | 64 | y | + | 2 | y | ( | 45 | − | y | − | 3 5 | ) |
| = | 14208 5 | − | 64 | y | + | 2 | y | × | 45 | − | 2 | y | y | − | 2 | y | × | 3 5 |
| = | 14208 5 | − | 64 | y | + | 90 | y | − | 2 | y | y | − | 6 5 | y |
| = | 14208 5 | + | 124 5 | y | − | 2 | y | y |
14208 5 | + | 124 5 | y | − | 2 | y | y | = | 924 |