1 10 | x | + | ( | x | × | 21 20 | + | 200 | ) | + | 3 20 | x | + | ( | 1 10 | x | × | 353 2000 | ) | = | 3519 25 |
| 方程左边 = | 1 4 | x | + | ( | x | × | 21 20 | + | 200 | ) | + | ( | 1 10 | x | × | 353 2000 | ) |
1 4 | x | + | ( | x | × | 21 20 | + | 200 | ) | + | ( | 1 10 | x | × | 353 2000 | ) | = | 3519 25 |
| 方程左边 = | 1 4 | x | + | x | × | 21 20 | + | 200 | + | ( | 1 10 | x | × | 353 2000 | ) |
| = | 13 10 | x | + | 200 | + | ( | 1 10 | x | × | 353 2000 | ) |
| = | 13 10 | x | + | 200 | + | 1 10 | x | × | 353 2000 |
| = | 13 10 | x | + | 200 | + | 353 20000 | x |
| = | 26353 20000 | x | + | 200 |
26353 20000 | x | + | 200 | = | 3519 25 |
26353 20000 | x | = | 3519 25 | − | 200 |
26353 20000 | x | = | - | 1481 25 |
| x | = | - | 1481 25 | ÷ | 26353 20000 |
| = | - | 1481 25 | × | 20000 26353 |
| = | - | 1481 | × | 800 26353 |
| x | = | - | 1184800 26353 |
| x | = | - 44.958828 |