393 10 | × | 270 | × | 36 | + | 157 5 | × | 270 | ( | x | − | 36 | ) | = | 447 | × | 308 | + | 402 | × | 443 | − | 462 | × | 447 | − | 509 | × | 459 |
| Left side of the equation = | 381996 | + | 8478 | ( | x | − | 36 | ) |
| 381996 | + | 8478 | ( | x | − | 36 | ) | = | 447 | × | 308 | + | 402 | × | 443 | − | 462 | × | 447 | − | 509 | × | 459 |
| Left side of the equation = | 381996 | + | 8478 | x | − | 8478 | × | 36 |
| = | 381996 | + | 8478 | x | − | 305208 |
| = | 76788 | + | 8478 | x |
| 76788 | + | 8478 | x | = | 447 | × | 308 | + | 402 | × | 443 | − | 462 | × | 447 | − | 509 | × | 459 |
| Right side of the equation = | 137676 | + | 178086 | − | 206514 | − | 233631 |
| = | - | 124383 |
| 76788 | + | 8478 | x | = | - | 124383 |
| 8478 | x | = | - | 124383 | − | 76788 |
| 8478 | x | = | - | 201171 |
| x | = | - | 201171 | ÷ | 8478 |
| = | - | 201171 | × | 1 8478 |
| = | - | 67057 | × | 1 2826 |
| x | = | - | 67057 2826 |
| x | = | - 23.728592 |