| ( | 9 4 | × | 1 5 | ÷ | ( | 9 4 | − | x | ) | ) | + | ( | 1 | × | 3 10 | ÷ | ( | 1 | − | x | ) | ) | + | ( | 33 100 | × | 1 10 | ÷ | ( | 33 100 | − | x | ) | ) | + | ( | 21 100 | × | 2 5 | ÷ | ( | 21 100 | − | x | ) | ) | = | 0 |
9 4 | × | 1 5 | ÷ | ( | 9 4 | − | x | ) | + | ( | 1 | × | 3 10 | ÷ | ( | 1 | − | x | ) | ) | + | ( | 33 100 | × | 1 10 | ÷ | ( | 33 100 | − | x | ) | ) | + | ( | 21 100 | × | 2 5 | ÷ | ( | 21 100 | − | x | ) | ) | = | 0 |
9 20 | ÷ | ( | 9 4 | − | x | ) | + | ( | 1 | × | 3 10 | ÷ | ( | 1 | − | x | ) | ) | + | ( | 33 100 | × | 1 10 | ÷ | ( | 33 100 | − | x | ) | ) | + | ( | 21 100 | × | 2 5 | ÷ | ( | 21 100 | − | x | ) | ) | = | 0 |
| 方程两边同时乘以: | ( | 9 4 | − | x | ) |
9 20 | + | ( | 1 | × | 3 10 | ÷ | ( | 1 | − | x | ) | ) | ( | 9 4 | − | x | ) | + | ( | 33 100 | × | 1 10 | ÷ | ( | 33 100 | − | x | ) | ) | ( | 9 4 | − | x | ) | + | ( | 21 100 | × | 2 5 | ÷ | ( | 21 100 | − | x | ) | ) | ( | 9 4 | − | x | ) | = | 0 |
9 20 | + | 1 | × | 3 10 | ÷ | ( | 1 | − | x | ) | × | ( | 9 4 | − | x | ) | + | ( | 33 100 | × | 1 10 | ÷ | ( | 33 100 | − | x | ) | ) | ( | 9 4 | − | x | ) | + | ( | 21 100 | × | 2 5 | ÷ | ( | 21 100 | − | x | ) | ) | ( | 9 4 | − | x | ) | = | 0 |
9 20 | + | 3 10 | ÷ | ( | 1 | − | x | ) | × | ( | 9 4 | − | x | ) | + | ( | 33 100 | × | 1 10 | ÷ | ( | 33 100 | − | x | ) | ) | ( | 9 4 | − | x | ) | + | ( | 21 100 | × | 2 5 | ÷ | ( | 21 100 | − | x | ) | ) | ( | 9 4 | − | x | ) | = | 0 |
| 方程两边同时乘以: | ( | 1 | − | x | ) |
9 20 | ( | 1 | − | x | ) | + | 3 10 | ( | 9 4 | − | x | ) | + | ( | 33 100 | × | 1 10 | ÷ | ( | 33 100 | − | x | ) | ) | ( | 9 4 | − | x | ) | ( | 1 | − | x | ) | + | ( | 21 100 | × | 2 5 | ÷ | ( | 21 100 | − | x | ) | ) | ( | 9 4 | − | x | ) | ( | 1 | − | x | ) | = | 0 |
9 20 | × | 1 | − | 9 20 | x | + | 3 10 | ( | 9 4 | − | x | ) | + | ( | 33 100 | × | 1 10 | ÷ | ( | 33 100 | − | x | ) | ) | ( | 9 4 | − | x | ) | ( | 1 | − | x | ) | + | ( | 21 100 | × | 2 5 | ÷ | ( | 21 100 | − | x | ) | ) | ( | 9 4 | − | x | ) | ( | 1 | − | x | ) | = | 0 |
9 20 | − | 9 20 | x | + | 3 10 | ( | 9 4 | − | x | ) | + | ( | 33 100 | × | 1 10 | ÷ | ( | 33 100 | − | x | ) | ) | ( | 9 4 | − | x | ) | ( | 1 | − | x | ) | + | ( | 21 100 | × | 2 5 | ÷ | ( | 21 100 | − | x | ) | ) | ( | 9 4 | − | x | ) | ( | 1 | − | x | ) | = | 0 |
9 20 | − | 9 20 | x | + | 3 10 | × | 9 4 | − | 3 10 | x | + | ( | 33 100 | × | 1 10 | ÷ | ( | 33 100 | − | x | ) | ) | ( | 9 4 | − | x | ) | ( | 1 | − | x | ) | + | ( | 21 100 | × | 2 5 | ÷ | ( | 21 100 | − | x | ) | ) | ( | 9 4 | − | x | ) | = | 0 |
9 20 | − | 9 20 | x | + | 27 40 | − | 3 10 | x | + | ( | 33 100 | × | 1 10 | ÷ | ( | 33 100 | − | x | ) | ) | ( | 9 4 | − | x | ) | ( | 1 | − | x | ) | + | ( | 21 100 | × | 2 5 | ÷ | ( | 21 100 | − | x | ) | ) | ( | 9 4 | − | x | ) | ( | 1 | − | x | ) | = | 0 |
9 8 | − | 3 4 | x | + | ( | 33 100 | × | 1 10 | ÷ | ( | 33 100 | − | x | ) | ) | ( | 9 4 | − | x | ) | ( | 1 | − | x | ) | + | ( | 21 100 | × | 2 5 | ÷ | ( | 21 100 | − | x | ) | ) | ( | 9 4 | − | x | ) | ( | 1 | − | x | ) | = | 0 |
9 8 | − | 3 4 | x | + | 33 100 | × | 1 10 | ÷ | ( | 33 100 | − | x | ) | × | ( | 9 4 | − | x | ) | ( | 1 | − | x | ) | + | ( | 21 100 | × | 2 5 | ÷ | ( | 21 100 | − | x | ) | ) | ( | 9 4 | − | x | ) | ( | 1 | − | x | ) | = | 0 |
9 8 | − | 3 4 | x | + | 33 1000 | ÷ | ( | 33 100 | − | x | ) | × | ( | 9 4 | − | x | ) | ( | 1 | − | x | ) | + | ( | 21 100 | × | 2 5 | ÷ | ( | 21 100 | − | x | ) | ) | ( | 9 4 | − | x | ) | ( | 1 | − | x | ) | = | 0 |
| 方程两边同时乘以: | ( | 33 100 | − | x | ) |
9 8 | ( | 33 100 | − | x | ) | − | 3 4 | x | ( | 33 100 | − | x | ) | + | 33 1000 | ( | 9 4 | − | x | ) | ( | 1 | − | x | ) | + | ( | 21 100 | × | 2 5 | ÷ | ( | 21 100 | − | x | ) | ) | ( | 9 4 | − | x | ) | ( | 1 | − | x | ) | ( | 33 100 | − | x | ) | = | 0 |
9 8 | × | 33 100 | − | 9 8 | x | − | 3 4 | x | ( | 33 100 | − | x | ) | + | 33 1000 | ( | 9 4 | − | x | ) | ( | 1 | − | x | ) | + | ( | 21 100 | × | 2 5 | ÷ | ( | 21 100 | − | x | ) | ) | ( | 9 4 | − | x | ) | = | 0 |
297 800 | − | 9 8 | x | − | 3 4 | x | ( | 33 100 | − | x | ) | + | 33 1000 | ( | 9 4 | − | x | ) | ( | 1 | − | x | ) | + | ( | 21 100 | × | 2 5 | ÷ | ( | 21 100 | − | x | ) | ) | ( | 9 4 | − | x | ) | ( | 1 | − | x | ) | = | 0 |
297 800 | − | 9 8 | x | − | 3 4 | x | × | 33 100 | + | 3 4 | x | x | + | 33 1000 | ( | 9 4 | − | x | ) | ( | 1 | − | x | ) | = | 0 |
297 800 | − | 9 8 | x | − | 99 400 | x | + | 3 4 | x | x | + | 33 1000 | ( | 9 4 | − | x | ) | ( | 1 | − | x | ) | + | ( | 21 100 | × | 2 5 | ÷ | ( | 21 100 | − | x | ) | ) | = | 0 |
297 800 | − | 549 400 | x | + | 3 4 | x | x | + | 33 1000 | ( | 9 4 | − | x | ) | ( | 1 | − | x | ) | + | ( | 21 100 | × | 2 5 | ÷ | ( | 21 100 | − | x | ) | ) | ( | 9 4 | − | x | ) | ( | 1 | − | x | ) | = | 0 |
297 800 | − | 549 400 | x | + | 3 4 | x | x | + | 33 1000 | × | 9 4 | ( | 1 | − | x | ) | − | 33 1000 | x | ( | 1 | − | x | ) | = | 0 |
297 800 | − | 549 400 | x | + | 3 4 | x | x | + | 297 4000 | ( | 1 | − | x | ) | − | 33 1000 | x | ( | 1 | − | x | ) | + | ( | 21 100 | × | 2 5 | ÷ | ( | 21 100 | − | x | ) | ) | = | 0 |
297 800 | − | 549 400 | x | + | 3 4 | x | x | + | 297 4000 | × | 1 | − | 297 4000 | x | − | 33 1000 | x | = | 0 |