25198857 25 | − | ( | 1098930 | ÷ | 109 100 | × | 9 | − | x | ÷ | 109 100 | × | 9 100 | ) | × | 28 25 | − | ( | 1098930 | + | x | ) | × | 3 10000 | − | ( | 52046109 50 | − | ( | 1098930 | ÷ | 109 100 | × | 9 100 | − | x | ÷ | 109 100 | × | 0 | ) | × | 3 25 | − | ( | 1098930 | + | x | ) | × | 3 10000 | ) | × | 1 4 | + | x | ÷ | 109 100 | × | 9 100 | = | x |
| 方程左边 = | 25198857 25 | − | ( | 1098930 | ÷ | 109 100 | × | 9 | − | x | ÷ | 109 100 | × | 9 100 | ) | × | 28 25 | − | ( | 1098930 | + | x | ) | × | 3 10000 | − | ( | 52046109 50 | − | ( | 1098930 | ÷ | 109 100 | × | 9 100 | − | x | ÷ | 109 100 | × | 0 | ) | × | 3 25 | − | ( | 1098930 | + | x | ) | × | 3 10000 | ) | × | 1 4 | + | x | × | 9 109 |
25198857 25 | − | ( | 1098930 | ÷ | 109 100 | × | 9 | − | x | ÷ | 109 100 | × | 9 100 | ) | × | 28 25 | − | ( | 1098930 | + | x | ) | × | 3 10000 | − | ( | 52046109 50 | − | ( | 1098930 | ÷ | 109 100 | × | 9 100 | − | x | ÷ | 109 100 | × | 0 | ) | × | 3 25 | − | ( | 1098930 | + | x | ) | × | 3 10000 | ) | × | 1 4 | + | 9 109 | x | = | x |
| 方程左边 = | 25198857 25 | − | 1098930 | ÷ | 109 100 | × | 9 | × | 28 25 | + | x | ÷ | 109 100 | × | 9 100 | × | 28 25 | − | ( | 1098930 | + | x | ) | × | 3 10000 | − | ( | 52046109 50 | − | ( | 1098930 | ÷ | 109 100 | × | 9 100 | − | x | ÷ | 109 100 | × | 0 | ) | × | 3 25 | − | ( | 1098930 | + | x | ) | × | 3 10000 | ) |