100 | = | x | × | 1207 50 | ( | 1 | + | 3 125 | ( | x | - | 7 2 | ) | ) | - | 13 10 |
方程右边 = | x | × | 1207 50 | × | 1 | + | x | × | 1207 50 | × | 3 125 | ( | x | - | 7 2 | ) | - | 13 10 |
= | x | × | 1207 50 | + | x | × | 3621 6250 | ( | x | - | 7 2 | ) | - | 13 10 |
= | 1207 50 | x | + | x | × | 3621 6250 | x | - | x | × | 3621 6250 | × | 7 2 | - | 13 10 |
= | 1207 50 | x | + | x | × | 3621 6250 | x | - | x | × | 25347 12500 | - | 13 10 |
= | 276403 12500 | x | + | x | × | 3621 6250 | x | - | 13 10 |
100 | = | 276403 12500 | x | + | x | × | 3621 6250 | x | - | 13 10 |