| x | × | 205 | + | x | × | 7 10 | × | 235 | + | x | × | 1 2 | × | 235 | + | x | × | 548 | + | x | × | 590 | = | 783500 |
| Left side of the equation = | x | × | 205 | + | x | × | 329 2 | + | x | × | 235 2 | + | x | × | 548 | + | x | × | 413 | + | x | × | 585 2 |
| = | 41163 20 | x |
41163 20 | x | = | 783500 |
| x | = | 783500 | ÷ | 41163 20 |
| = | 783500 | × | 20 41163 |
| x | = | 15670000 41163 |
| x | = | 380.68168 |