| 4100 | + | 1500 | + | x | + | ( | ( | 4100 | + | x | ) | ÷ | 87 4 | × | 8 | ) | = | 15500 |
| Left side of the equation = | 5600 | + | x | + | ( | ( | 4100 | + | x | ) | ÷ | 87 4 | × | 8 | ) |
| 5600 | + | x | + | ( | ( | 4100 | + | x | ) | ÷ | 87 4 | × | 8 | ) | = | 15500 |
| Left side of the equation = | 5600 | + | x | + | ( | 4100 | + | x | ) | ÷ | 87 4 | × | 8 |
| = | 5600 | + | x | + | ( | 4100 | + | x | ) | × | 32 87 |
| = | 5600 | + | x | + | 4100 | × | 32 87 | + | x | × | 32 87 |
| = | 5600 | + | x | + | 131200 87 | + | x | × | 32 87 |
| = | 618400 87 | + | 119 87 | x |
618400 87 | + | 119 87 | x | = | 15500 |
119 87 | x | = | 15500 | − | 618400 87 |
119 87 | x | = | 730100 87 |
| x | = | 730100 87 | ÷ | 119 87 |
| = | 730100 87 | × | 87 119 |
| = | 104300 | × | 1 17 |
| x | = | 104300 17 |
| x | = | 6135.294118 |