475 4 | + | 663 8 | − | 1 4 | a | = | 67 200 | ( | 475 | + | 195 | − | a | ) |
| Left side of the equation = | 1613 8 | − | 1 4 | a |
1613 8 | − | 1 4 | a | = | 67 200 | ( | 475 | + | 195 | − | a | ) |
| Right side of the equation = | 67 200 | × | 475 | + | 67 200 | × | 195 | − | 67 200 | a |
| = | 1273 8 | + | 2613 40 | − | 67 200 | a |
| = | 4489 20 | − | 67 200 | a |
1613 8 | − | 1 4 | a | = | 4489 20 | − | 67 200 | a |
| - | 1 4 | a | + | 67 200 | a | = | 4489 20 | − | 1613 8 |
17 200 | a | = | 4489 20 | − | 1613 8 |
17 200 | a | = | 913 40 |
| a | = | 913 40 | ÷ | 17 200 |
| = | 913 40 | × | 200 17 |
| = | 913 | × | 5 17 |
| a | = | 4565 17 |
| a | = | 268.529412 |