| ( | 25759 1000 | + | x | ) | × | 31 20 | = | 51519 1000 | + | 34539 500 | − | x |
| Left side of the equation = | 25759 1000 | × | 31 20 | + | x | × | 31 20 |
| = | 798529 20000 | + | x | × | 31 20 |
798529 20000 | + | 31 20 | x | = | 51519 1000 | + | 34539 500 | − | x |
| Right side of the equation = | 120597 1000 | − | x |
798529 20000 | + | 31 20 | x | = | 120597 1000 | − | x |
31 20 | x | + | x | = | 120597 1000 | − | 798529 20000 |
51 20 | x | = | 120597 1000 | − | 798529 20000 |
51 20 | x | = | 1613411 20000 |
| x | = | 1613411 20000 | ÷ | 51 20 |
| = | 1613411 20000 | × | 20 51 |
| = | 1613411 1000 | × | 1 51 |
| x | = | 1613411 51000 |
| x | = | 31.63551 |