143 10 | × | 400 | x | ( | 127 | + | x | ÷ | 2 | ) | = | 360 | × | 1152 | × | 420 |
| Left side of the equation = | 5720 | x | ( | 127 | + | x | ÷ | 2 | ) |
| 5720 | x | ( | 127 | + | x | ÷ | 2 | ) | = | 360 | × | 1152 | × | 420 |
| Left side of the equation = | 5720 | x | × | 127 | + | 5720 | x | x | ÷ | 2 |
| = | 726440 | x | + | 2860 | x | x |
| 726440 | x | + | 2860 | x | x | = | 360 | × | 1152 | × | 420 |
| Right side of the equation = | 174182400 |
| 726440 | x | + | 2860 | x | x | = | 174182400 |