| ( | 1843 10 | + | 31 10 | x | ) | = | 3 | ( | 519 5 | + | x | ) |
| Left side of the equation = | 1843 10 | + | 31 10 | x |
1843 10 | + | 31 10 | x | = | 3 | ( | 519 5 | + | x | ) |
| Right side of the equation = | 3 | × | 519 5 | + | 3 | x |
| = | 1557 5 | + | 3 | x |
1843 10 | + | 31 10 | x | = | 1557 5 | + | 3 | x |
31 10 | x | − | 3 | x | = | 1557 5 | − | 1843 10 |
1 10 | x | = | 1557 5 | − | 1843 10 |
1 10 | x | = | 1271 10 |
| x | = | 1271 10 | ÷ | 1 10 |
| = | 1271 10 | × | 10 |
| = | 1271 | × | 1 |
| x | = | 1271 |