142339 250 | − | 47 5 | ( | 39 5 | x | + | 29 5 | ) | = | 42 5 | x |
| Left side of the equation = | 142339 250 | − | 47 5 | × | 39 5 | x | − | 47 5 | × | 29 5 |
| = | 142339 250 | − | 1833 25 | x | − | 1363 25 |
| = | 128709 250 | − | 1833 25 | x |
128709 250 | − | 1833 25 | x | = | 42 5 | x |
| - | 1833 25 | x | − | 42 5 | x | = | - | 128709 250 |
| - | 2043 25 | x | = | - | 128709 250 |
128709 250 | = | 2043 25 | x |
2043 25 | x | = | 128709 250 |
| x | = | 128709 250 | ÷ | 2043 25 |
| = | 128709 250 | × | 25 2043 |
| = | 14301 10 | × | 1 227 |
| x | = | 14301 2270 |
| x | = | 6.3 |