143 10 | × | 400 | x | ( | 655 | − | 555 | + | 1 2 | x | ) | = | 360 | × | 1520 | × | 655 | − | 360 | × | 1964 | × | 145 |
| Left side of the equation = | 5720 | x | ( | 655 | − | 555 | + | 1 2 | x | ) |
| 5720 | x | ( | 655 | − | 555 | + | 1 2 | x | ) | = | 360 | × | 1520 | × | 655 | − | 360 | × | 1964 | × | 145 |
| Left side of the equation = | 5720 | x | × | 655 | − | 5720 | x | × | 555 | + | 5720 | x | × | 1 2 | x |
| = | 3746600 | x | − | 3174600 | x | + | 2860 | x | x |
| = | 572000 | x | + | 2860 | x | x |
| 572000 | x | + | 2860 | x | x | = | 360 | × | 1520 | × | 655 | − | 360 | × | 1964 | × | 145 |
| Right side of the equation = | 358416000 | − | 102520800 |
| = | 255895200 |
| 572000 | x | + | 2860 | x | x | = | 255895200 |