| ( | x | + | 500 | ) | ÷ | 87 4 | × | 16 | + | x | ÷ | 87 4 | ÷ | 8 | × | 61 | + | 50 | − | 210 | = | 0 |
| Left side of the equation = | ( | x | + | 500 | ) | × | 64 87 | + | x | × | 61 174 | + | 50 | − | 210 |
| = | ( | x | + | 500 | ) | × | 64 87 | + | 61 174 | x | − | 160 |
| ( | x | + | 500 | ) | × | 64 87 | + | 61 174 | x | − | 160 | = | 0 |
| Left side of the equation = | x | × | 64 87 | + | 500 | × | 64 87 | + | 61 174 | x | − | 160 |
| = | x | × | 64 87 | + | 32000 87 | + | 61 174 | x | − | 160 |
| = | 63 58 | x | + | 18080 87 |
63 58 | x | + | 18080 87 | = | 0 |
63 58 | x | = | 0 | − | 18080 87 |
63 58 | x | = | - | 18080 87 |
| x | = | - | 18080 87 | ÷ | 63 58 |
| = | - | 18080 87 | × | 58 63 |
| = | - | 18080 3 | × | 2 63 |
| x | = | - | 36160 189 |
| x | = | - 191.322751 |