| ( | x | − | 10 | ) | × | 37 2000 | + | 10 | × | 3 1000 | = | ( | x | − | 50 | ) | × | 19 1000 | + | 50 | × | 3 1000 |
| Left side of the equation = | ( | x | − | 10 | ) | × | 37 2000 | + | 3 100 |
| ( | x | − | 10 | ) | × | 37 2000 | + | 3 100 | = | ( | x | − | 50 | ) | × | 19 1000 | + | 50 | × | 3 1000 |
| Left side of the equation = | x | × | 37 2000 | − | 10 | × | 37 2000 | + | 3 100 |
| = | x | × | 37 2000 | − | 37 200 | + | 3 100 |
| = | 37 2000 | x | − | 31 200 |
37 2000 | x | − | 31 200 | = | ( | x | − | 50 | ) | × | 19 1000 | + | 50 | × | 3 1000 |
| Right side of the equation = | ( | x | − | 50 | ) | × | 19 1000 | + | 3 20 |
37 2000 | x | − | 31 200 | = | ( | x | − | 50 | ) | × | 19 1000 | + | 3 20 |
| Right side of the equation = | x | × | 19 1000 | − | 50 | × | 19 1000 | + | 3 20 |
| = | x | × | 19 1000 | − | 19 20 | + | 3 20 |
| = | 19 1000 | x | − | 4 5 |
37 2000 | x | − | 31 200 | = | 19 1000 | x | − | 4 5 |
37 2000 | x | − | 19 1000 | x | = | - | 4 5 | + | 31 200 |
| - | 1 2000 | x | = | - | 4 5 | + | 31 200 |
| - | 1 2000 | x | = | - | 129 200 |
129 200 | = | 1 2000 | x |
1 2000 | x | = | 129 200 |
| x | = | 129 200 | ÷ | 1 2000 |
| = | 129 200 | × | 2000 |
| = | 129 | × | 10 |
| x | = | 1290 |