| x | ÷ | 387 4 | + | ( | 25 | x | ) | ÷ | ( | 6119 | ( | 1 | − | 608251 20000000000 | x | ) | ) | = | 215 |
| 方程两边同时乘以: | ( | 6119 | ( | 1 | − | 608251 20000000000 | x | ) | ) |
| x | ÷ | 387 4 | × | ( | 6119 | ( | 1 | − | 608251 20000000000 | x | ) | ) | + | ( | 25 | x | ) | = | 215 | ( | 6119 | ( | 1 | − | 608251 20000000000 | x | ) | ) |
| x | ÷ | 387 4 | × | 6119 | ( | 1 | − | 608251 20000000000 | x | ) | + | ( | 25 | x | ) | = | 215 | ( | 6119 | ( | 1 | − | 608251 20000000000 | x | ) | ) |
| x | ÷ | 387 4 | × | 6119 | ( | 1 | − | 608251 20000000000 | x | ) | + | ( | 25 | x | ) | = | 215 | × | 6119 | ( | 1 | − | 608251 20000000000 | x | ) |
| x | × | 24476 387 | ( | 1 | − | 608251 20000000000 | x | ) | + | ( | 25 | x | ) | = | 1315585 | ( | 1 | − | 608251 20000000000 | x | ) |
| x | × | 24476 387 | × | 1 | − | x | × | 24476 387 | × | 608251 20000000000 | x | + | ( | 25 | x | ) | = | 1315585 | ( | 1 | − | 608251 20000000000 | x | ) |
| x | × | 24476 387 | × | 1 | − | x | × | 24476 387 | × | 608251 20000000000 | x | + | ( | 25 | x | ) | = | 1315585 | × | 1 | − | 1315585 | × | 608251 20000000000 | x |