( | X | − | 200 | ) | ( | 1 | − | 25 100 | ) | ÷ | 3000 | = | ( | X | − | 200 | − | 150 | ) | ( | 1 | − | 25 100 | ) | ÷ | 3000 | + | 300 |
方程左边 = | X | ( | 1 | − | 25 100 | ) | × | 1 3000 | − | 200 | ( | 1 | − | 25 100 | ) | × | 1 3000 |
= | X | ( | 1 | − | 25 100 | ) | × | 1 3000 | − | 1 15 | ( | 1 | − | 25 100 | ) |
= | X | × | 1 | × | 1 3000 | − | X | × | 25 100 | × | 1 3000 | − | 1 15 | ( | 1 | − | 25 100 | ) |
= | X | × | 1 3000 | − | X | × | 1 12000 | − | 1 15 | ( | 1 | − | 25 100 | ) |
= | 1 4000 | X | − | 1 15 | ( | 1 | − | 25 100 | ) |
= | 1 4000 | X | − | 1 15 | × | 1 | + | 1 15 | × | 25 100 |
= | 1 4000 | X | − | 1 15 | + | 1 60 |
= | 1 4000 | X | − | 1 20 |
1 4000 | X | − | 1 20 | = | ( | X | − | 200 | − | 150 | ) | ( | 1 | − | 25 100 | ) | ÷ | 3000 | + | 300 |
方程右边 = | X | ( | 1 | − | 25 100 | ) | × | 1 3000 | − | 200 | ( | 1 | − | 25 100 | ) | × | 1 3000 | − | 150 | ( | 1 | − | 25 100 | ) | × | 1 3000 | + | 300 |
= | X | ( | 1 | − | 25 100 | ) | × | 1 3000 | − | 1 15 | ( | 1 | − | 25 100 | ) | − | 1 20 | ( | 1 | − | 25 100 | ) | + | 300 |
= | X | × | 1 | × | 1 3000 | − | X | × | 25 100 | × | 1 3000 | − | 1 15 | ( | 1 | − | 25 100 | ) | − | 1 20 | ( | 1 | − | 25 100 | ) | + | 300 |
= | X | × | 1 3000 | − | X | × | 1 12000 | − | 1 15 | ( | 1 | − | 25 100 | ) | − | 1 20 | ( | 1 | − | 25 100 | ) | + | 300 |
= | 1 4000 | X | − | 1 15 | ( | 1 | − | 25 100 | ) | − | 1 20 | ( | 1 | − | 25 100 | ) | + | 300 |
= | 1 4000 | X | − | 1 15 | × | 1 | + | 1 15 | × | 25 100 | − | 1 20 | ( | 1 | − | 25 100 | ) | + | 300 |
= | 1 4000 | X | − | 1 15 | + | 1 60 | − | 1 20 | ( | 1 | − | 25 100 | ) | + | 300 |
= | 1 4000 | X | + | 5999 20 | − | 1 20 | ( | 1 | − | 25 100 | ) |
= | 1 4000 | X | + | 5999 20 | − | 1 20 | × | 1 | + | 1 20 | × | 25 100 |
= | 1 4000 | X | + | 5999 20 | − | 1 20 | + | 1 80 |
= | 1 4000 | X | + | 23993 80 |
1 4000 | X | − | 1 20 | = | 1 4000 | X | + | 23993 80 |
1 4000 | X | − | 1 4000 | X | = | 23993 80 | + | 1 20 |
0 | X | = | 23993 80 | + | 1 20 |
0 | X | = | 23997 80 |