312 5 | − | 312 5 | a | = | 4053 40 | a | × | 3 | + | 4053 40 | a | × | 2 |
| Right side of the equation = | 12159 40 | a | + | 4053 20 | a |
| = | 4053 8 | a |
312 5 | − | 312 5 | a | = | 4053 8 | a |
| - | 312 5 | a | − | 4053 8 | a | = | - | 312 5 |
| - | 22761 40 | a | = | - | 312 5 |
312 5 | = | 22761 40 | a |
22761 40 | a | = | 312 5 |
| a | = | 312 5 | ÷ | 22761 40 |
| = | 312 5 | × | 40 22761 |
| = | 104 | × | 8 7587 |
| a | = | 832 7587 |
| a | = | 0.109661 |