| ( | x | − | 6000 | × | 6 100 | ) | ( | 1 | − | 25 100 | ) | ÷ | ( | 3000 | + | 600 | ) | = | ( | x | − | 6000 | × | 6 100 | − | 2400 | × | 8 100 | ) | ( | 1 | − | 25 100 | ) | ÷ | 3000 |
| 方程两边同时乘以: | ( | 3000 | + | 600 | ) |
| ( | x | − | 6000 | × | 6 100 | ) | ( | 1 | − | 25 100 | ) | = | ( | x | − | 6000 | × | 6 100 | − | 2400 | × | 8 100 | ) | ( | 1 | − | 25 100 | ) | ÷ | 3000 | × | ( | 3000 | + | 600 | ) |
| x | ( | 1 | − | 25 100 | ) | − | 6000 | × | 6 100 | ( | 1 | − | 25 100 | ) | = | ( | x | − | 6000 | × | 6 100 | − | 2400 | × | 8 100 | ) | ( | 1 | − | 25 100 | ) | ÷ | 3000 | × | ( | 3000 | + | 600 | ) |
| x | ( | 1 | − | 25 100 | ) | − | 6000 | × | 6 100 | ( | 1 | − | 25 100 | ) | = | x | ( | 1 | − | 25 100 | ) | ÷ | 3000 | × | ( | 3000 | + | 600 | ) | − | 6000 | × | 6 100 | ( | 1 | − | 25 100 | ) | ÷ | 3000 | × | ( | 3000 | + | 600 | ) | − | 2400 | × | 8 100 | ( | 1 | − | 25 100 | ) |
| x | ( | 1 | − | 25 100 | ) | − | 360 | ( | 1 | − | 25 100 | ) | = | x | ( | 1 | − | 25 100 | ) | × | 1 3000 | ( | 3000 | + | 600 | ) | − | 3 25 | ( | 1 | − | 25 100 | ) | ( | 3000 | + | 600 | ) | − | 8 125 | ( | 1 | − | 25 100 | ) | ( | 3000 | + | 600 | ) |
| x | × | 1 | − | x | × | 25 100 | − | 360 | ( | 1 | − | 25 100 | ) | = | x | ( | 1 | − | 25 100 | ) | × | 1 3000 | ( | 3000 | + | 600 | ) | − | 3 25 | ( | 1 | − | 25 100 | ) | ( | 3000 | + | 600 | ) | − | 8 125 | ( | 1 | − | 25 100 | ) | ( | 3000 | + | 600 | ) |
| x | × | 1 | − | x | × | 25 100 | − | 360 | ( | 1 | − | 25 100 | ) | = | x | × | 1 | × | 1 3000 | ( | 3000 | + | 600 | ) | − | x | × | 25 100 | × | 1 3000 | ( | 3000 | + | 600 | ) | − | 3 25 | ( | 1 | − | 25 100 | ) | ( | 3000 | + | 600 | ) | − | 8 125 |
| x | × | 1 | − | x | × | 25 100 | − | 360 | ( | 1 | − | 25 100 | ) | = | x | × | 1 3000 | ( | 3000 | + | 600 | ) | − | x | × | 1 12000 | ( | 3000 | + | 600 | ) | − | 3 25 | ( | 1 | − | 25 100 | ) | ( | 3000 | + | 600 | ) | − | 8 125 | ( | 1 | − | 25 100 | ) | ( | 3000 | + | 600 | ) |
3 4 | x | − | 360 | ( | 1 | − | 25 100 | ) | = | x | × | 1 3000 | ( | 3000 | + | 600 | ) | − | x | × | 1 12000 | ( | 3000 | + | 600 | ) | − | 3 25 | ( | 1 | − | 25 100 | ) | ( | 3000 | + | 600 | ) | − | 8 125 | ( | 1 | − | 25 100 | ) | ( | 3000 | + | 600 | ) |
3 4 | x | − | 360 | × | 1 | + | 360 | × | 25 100 | = | x | × | 1 3000 | ( | 3000 | + | 600 | ) | − | x | × | 1 12000 | ( | 3000 | + | 600 | ) | − | 3 25 | ( | 1 | − | 25 100 | ) | ( | 3000 | + | 600 | ) | − | 8 125 | ( | 1 | − | 25 100 | ) | ( | 3000 | + | 600 | ) |
3 4 | x | − | 360 | × | 1 | + | 360 | × | 25 100 | = | x | × | 1 3000 | × | 3000 | + | x | × | 1 3000 | × | 600 | − | x | × | 1 12000 | ( | 3000 | + | 600 | ) | − | 3 25 | ( | 1 | − | 25 100 | ) | ( | 3000 | + | 600 | ) |
3 4 | x | − | 360 | + | 90 | = | x | × | 1 | + | x | × | 1 5 | − | x | × | 1 12000 | ( | 3000 | + | 600 | ) | − | 3 25 | ( | 1 | − | 25 100 | ) | ( | 3000 | + | 600 | ) | − | 8 125 | ( | 1 | − | 25 100 | ) |
3 4 | x | − | 270 | = | 6 5 | x | − | x | × | 1 12000 | ( | 3000 | + | 600 | ) | − | 3 25 | ( | 1 | − | 25 100 | ) | ( | 3000 | + | 600 | ) | − | 8 125 | ( | 1 | − | 25 100 | ) | ( | 3000 | + | 600 | ) |
3 4 | x | − | 270 | = | 6 5 | x | − | x | × | 1 12000 | × | 3000 | − | x | × | 1 12000 | × | 600 | − | 3 25 | ( | 1 | − | 25 100 | ) | ( | 3000 | + | 600 | ) | − | 8 125 |
3 4 | x | − | 270 | = | 6 5 | x | − | x | × | 1 4 | − | x | × | 1 20 | − | 3 25 | ( | 1 | − | 25 100 | ) | ( | 3000 | + | 600 | ) | − | 8 125 | ( | 1 | − | 25 100 | ) | ( | 3000 | + | 600 | ) |
3 4 | x | − | 270 | = | 9 10 | x | − | 3 25 | ( | 1 | − | 25 100 | ) | ( | 3000 | + | 600 | ) | − | 8 125 | ( | 1 | − | 25 100 | ) | ( | 3000 | + | 600 | ) |
3 4 | x | − | 270 | = | 9 10 | x | − | 3 25 | × | 1 | ( | 3000 | + | 600 | ) | + | 3 25 | × | 25 100 | ( | 3000 | + | 600 | ) | − | 8 125 | ( | 1 | − | 25 100 | ) | ( | 3000 | + | 600 | ) |
3 4 | x | − | 270 | = | 9 10 | x | − | 3 25 | ( | 3000 | + | 600 | ) | + | 3 100 | ( | 3000 | + | 600 | ) | − | 8 125 | ( | 1 | − | 25 100 | ) | ( | 3000 | + | 600 | ) |
3 4 | x | − | 270 | = | 9 10 | x | − | 3 25 | × | 3000 | − | 3 25 | × | 600 | + | 3 100 | ( | 3000 | + | 600 | ) | − | 8 125 | ( | 1 | − | 25 100 | ) | ( | 3000 | + | 600 | ) |
3 4 | x | − | 270 | = | 9 10 | x | − | 360 | − | 72 | + | 3 100 | ( | 3000 | + | 600 | ) | − | 8 125 | ( | 1 | − | 25 100 | ) | ( | 3000 | + | 600 | ) |
3 4 | x | − | 270 | = | 9 10 | x | − | 432 | + | 3 100 | ( | 3000 | + | 600 | ) | − | 8 125 | ( | 1 | − | 25 100 | ) | ( | 3000 | + | 600 | ) |
3 4 | x | − | 270 | = | 9 10 | x | − | 432 | + | 3 100 | × | 3000 | + | 3 100 | × | 600 | − | 8 125 | ( | 1 | − | 25 100 | ) | ( | 3000 | + | 600 | ) |
3 4 | x | − | 270 | = | 9 10 | x | − | 432 | + | 90 | + | 18 | − | 8 125 | ( | 1 | − | 25 100 | ) | ( | 3000 | + | 600 | ) |
3 4 | x | − | 270 | = | 9 10 | x | − | 324 | − | 8 125 | ( | 1 | − | 25 100 | ) | ( | 3000 | + | 600 | ) |
3 4 | x | − | 270 | = | 9 10 | x | − | 324 | − | 8 125 | × | 1 | ( | 3000 | + | 600 | ) | + | 8 125 | × | 25 100 | ( | 3000 | + | 600 | ) |
3 4 | x | − | 270 | = | 9 10 | x | − | 324 | − | 8 125 | ( | 3000 | + | 600 | ) | + | 2 125 | ( | 3000 | + | 600 | ) |