639 10 | x | ÷ | ( | 2 | × | 27 | × | 1000 | ) | + | 213 10 | ( | 1 | − | x | ) | ÷ | 65 | ÷ | 1000 | = | 191251 2000 | × | 1 1000 | × | 1919 100 | ÷ | 4157 500 | ÷ | 303 |
| Multiply both sides of the equation by: | ( | 2 | × | 27 | × | 1000 | ) |
639 10 | x | + | 213 10 | ( | 1 | − | x | ) | ÷ | 65 | ÷ | 1000 | × | ( | 2 | × | 27 | × | 1000 | ) | = | 191251 2000 | × | 1 1000 | × | 1919 100 | ÷ | 4157 500 | ÷ | 303 | × | ( | 2 | × | 27 | × | 1000 | ) |
639 10 | x | + | 213 10 | × | 1 | ÷ | 65 | ÷ | 1000 | × | ( | 2 | × | 27 | × | 1000 | ) | − | 213 10 | x | ÷ | 65 | ÷ | 1000 | × | ( | 2 | × | 27 | × | 1000 | ) | = | 191251 2000 | × | 1 1000 | × | 1919 100 | ÷ | 4157 500 | ÷ | 303 | × | ( | 2 | × | 27 | × | 1000 | ) |
639 10 | x | + | 213 10 | × | 1 | ÷ | 65 | ÷ | 1000 | × | ( | 2 | × | 27 | × | 1000 | ) | − | 213 10 | x | ÷ | 65 | ÷ | 1000 | × | ( | 2 | × | 27 | × | 1000 | ) | = | 191251 2000 | × | 1 1000 | × | 1919 100 | ÷ | 4157 500 | ÷ | 303 | × | 2 | × | 27 | × | 1000 |