| ( | 396 | × | 557 1000 | + | x | ) | ÷ | ( | 396 | + | x | ) | = | 3 5 |
| Multiply both sides of the equation by: | ( | 396 | + | x | ) |
| ( | 396 | × | 557 1000 | + | x | ) | = | 3 5 | ( | 396 | + | x | ) |
| 396 | × | 557 1000 | + | x | = | 3 5 | ( | 396 | + | x | ) |
| 396 | × | 557 1000 | + | x | = | 3 5 | × | 396 | + | 3 5 | x |
55143 250 | + | x | = | 1188 5 | + | 3 5 | x |
| x | − | 3 5 | x | = | 1188 5 | − | 55143 250 |
2 5 | x | = | 1188 5 | − | 55143 250 |
2 5 | x | = | 4257 250 |
| x | = | 4257 250 | ÷ | 2 5 |
| = | 4257 250 | × | 5 2 |
| = | 4257 50 | × | 1 2 |
| x | = | 4257 100 |
| x | = | 42.57 |