| x | − | 100 | − | ( | x | − | 100 | ) | × | 13 100 | ( | 1 | + | 3 25 | ) | − | ( | x | − | 100 | ) | × | 1 20 | − | ( | x | − | 100 | ) | × | 1 2000 | − | x | × | 3 10000 | − | 1 10 | = | 0 |
| 方程左边 = | 8997 10000 | x | − | 100 | − | ( | x | − | 100 | ) | × | 13 100 | ( | 1 | + | 3 25 | ) | − | ( | x | − | 100 | ) | × | 1 20 | − | ( | x | − | 100 | ) | × | 1 2000 |
8997 10000 | x | − | 100 | − | ( | x | − | 100 | ) | × | 13 100 | ( | 1 | + | 3 25 | ) | − | ( | x | − | 100 | ) | × | 1 20 | − | ( | x | − | 100 | ) | × | 1 2000 | = | 0 |
| 方程左边 = | 8997 10000 | x | − | 100 | − | x | × | 13 100 | ( | 1 | + | 3 25 | ) | + | 100 | × | 13 100 | ( | 1 | + | 3 25 | ) | − | ( | x | − | 100 | ) | × | 1 20 | − | ( | x | − | 100 | ) |
| = | 8997 10000 | x | − | 100 | − | x | × | 13 100 | ( | 1 | + | 3 25 | ) | + | 13 | ( | 1 | + | 3 25 | ) | − | ( | x | − | 100 | ) | × | 1 20 | − | ( | x | − | 100 | ) | × | 1 2000 |
| = | 8997 10000 | x | − | 100 | − | x | × | 13 100 | × | 1 | − | x | × | 13 100 | × | 3 25 | + | 13 | ( | 1 | + | 3 25 | ) | − | ( | x | − | 100 | ) |
| = | 8997 10000 | x | − | 100 | − | x | × | 13 100 | − | x | × | 39 2500 | + | 13 | ( | 1 | + | 3 25 | ) | − | ( | x | − | 100 | ) | × | 1 20 | − | ( | x | − | 100 | ) |
| = | 7541 10000 | x | − | 100 | + | 13 | ( | 1 | + | 3 25 | ) | − | ( | x | − | 100 | ) | × | 1 20 | − | ( | x | − | 100 | ) | × | 1 2000 |
| = | 7541 10000 | x | − | 100 | + | 13 | × | 1 | + | 13 | × | 3 25 | − | ( | x | − | 100 | ) | × | 1 20 | − | ( | x | − | 100 | ) | × | 1 2000 |
| = | 7541 10000 | x | − | 100 | + | 13 | + | 39 25 | − | ( | x | − | 100 | ) | × | 1 20 | − | ( | x | − | 100 | ) | × | 1 2000 |
| = | 7541 10000 | x | − | 2136 25 | − | ( | x | − | 100 | ) | × | 1 20 | − | ( | x | − | 100 | ) | × | 1 2000 |
| = | 7541 10000 | x | − | 2136 25 | − | x | × | 1 20 | + | 100 | × | 1 20 | − | ( | x | − | 100 | ) | × | 1 2000 |
| = | 7541 10000 | x | − | 2136 25 | − | x | × | 1 20 | + | 5 | − | ( | x | − | 100 | ) | × | 1 2000 |
| = | 7041 10000 | x | − | 2011 25 | − | ( | x | − | 100 | ) | × | 1 2000 |
| = | 7041 10000 | x | − | 2011 25 | − | x | × | 1 2000 | + | 100 | × | 1 2000 |
| = | 7041 10000 | x | − | 2011 25 | − | x | × | 1 2000 | + | 1 20 |
| = | 1759 2500 | x | − | 8039 100 |
1759 2500 | x | − | 8039 100 | = | 0 |
1759 2500 | x | = | 0 | + | 8039 100 |
1759 2500 | x | = | 8039 100 |
| x | = | 8039 100 | ÷ | 1759 2500 |
| = | 8039 100 | × | 2500 1759 |
| = | 8039 | × | 25 1759 |
| x | = | 200975 1759 |
| x | = | 114.255259 |