1 5 | x | × | 3 | ( | 1 | − | ( | 85 | ÷ | x | ) | × | 4 | ) | = | 1800 | ÷ | 60000000 |
1 5 | x | × | 3 | × | 1 | − | 1 5 | x | × | 3 | ( | 85 | ÷ | x | ) | × | 4 | = | 1800 | ÷ | 60000000 |
3 5 | x | − | 12 5 | x | ( | 85 | ÷ | x | ) | = | 3 100000 |
3 5 | x | − | 12 5 | × | 1 | × | 85 | ÷ | 1 | = | 3 100000 |
3 5 | x | − | 204 | = | 3 100000 |
3 5 | x | = | 3 100000 | + | 204 |
3 5 | x | = | 20400003 100000 |
| x | = | 20400003 100000 | ÷ | 3 5 |
| = | 20400003 100000 | × | 5 3 |
| = | 6800001 20000 | × | 1 |
| x | = | 6800001 20000 |
| x | = | 340.00005 |