| ( | 100 | + | 399 100 | ) | x | + | 169 50 | × | 989999 1000000 | = | 59 20 |
| Left side of the equation = | ( | 100 | + | 399 100 | ) | x | + | 167309831 50000000 |
| ( | 100 | + | 399 100 | ) | x | + | 167309831 50000000 | = | 59 20 |
| Left side of the equation = | 100 | x | + | 399 100 | x | + | 167309831 50000000 |
| = | 10399 100 | x | + | 167309831 50000000 |
10399 100 | x | + | 167309831 50000000 | = | 59 20 |
10399 100 | x | = | 59 20 | − | 167309831 50000000 |
10399 100 | x | = | - | 19809831 50000000 |
| x | = | - | 19809831 50000000 | ÷ | 10399 100 |
| = | - | 19809831 50000000 | × | 100 10399 |
| = | - | 19809831 500000 | × | 1 10399 |
| x | = | - | 19809831 5199500000 |
| x | = | - 0.00381 |