1341 5 | + | A | + | 1250 | + | ( | 640 | − | A | ) | × | 1 100 | − | 1950 | = | 10 |
| Left side of the equation = | - | 2159 5 | + | A | + | ( | 640 | − | A | ) | × | 1 100 |
| - | 2159 5 | + | A | + | ( | 640 | − | A | ) | × | 1 100 | = | 10 |
| Left side of the equation = | - | 2159 5 | + | A | + | 640 | × | 1 100 | − | A | × | 1 100 |
| = | - | 2159 5 | + | A | + | 32 5 | − | A | × | 1 100 |
| = | - | 2127 5 | + | 99 100 | A |
| - | 2127 5 | + | 99 100 | A | = | 10 |
99 100 | A | = | 10 | + | 2127 5 |
99 100 | A | = | 2177 5 |
| A | = | 2177 5 | ÷ | 99 100 |
| = | 2177 5 | × | 100 99 |
| = | 2177 | × | 20 99 |
| A | = | 43540 99 |
| A | = | 439.79798 |