| ( | 34 | − | t | ) | ( | 5 | ÷ | 4 | × | 600 | ÷ | ( | t | − | 5 | ) | − | 100 | ) | = | ( | 22 | − | t | ) | × | 600 | ÷ | t | − | 5 |
| 方程两边同时乘以: | t |
| ( | 34 | − | t | ) | ( | 5 | ÷ | 4 | × | 600 | ÷ | ( | t | − | 5 | ) | − | 100 | ) | t | = | ( | 22 | − | t | ) | × | 600 | − | 5 | t |
| 34 | ( | 5 | ÷ | 4 | × | 600 | ÷ | ( | t | − | 5 | ) | − | 100 | ) | t | − | t | ( | 5 | ÷ | 4 | × | 600 | ÷ | ( | t | − | 5 | ) | − | 100 | ) | t | = | ( | 22 | − | t | ) | × | 600 | − | 5 | t |
| 34 | ( | 5 | ÷ | 4 | × | 600 | ÷ | ( | t | − | 5 | ) | − | 100 | ) | t | − | t | ( | 5 | ÷ | 4 | × | 600 | ÷ | ( | t | − | 5 | ) | − | 100 | ) | t | = | 22 | × | 600 | − | t | × | 600 | − | 5 | t |
| 34 | ( | 5 | ÷ | 4 | × | 600 | ÷ | ( | t | − | 5 | ) | − | 100 | ) | t | − | t | ( | 5 | ÷ | 4 | × | 600 | ÷ | ( | t | − | 5 | ) | − | 100 | ) | t | = | 13200 | − | t | × | 600 | − | 5 | t |
| 34 | ( | 5 | ÷ | 4 | × | 600 | ÷ | ( | t | − | 5 | ) | − | 100 | ) | t | − | t | ( | 5 | ÷ | 4 | × | 600 | ÷ | ( | t | − | 5 | ) | − | 100 | ) | t | = | 13200 | − | 605 | t |
| 34 | × | 5 | ÷ | 4 | × | 600 | ÷ | ( | t | − | 5 | ) | × | t | − | 34 | × | 100 | t | − | t | ( | 5 | ÷ | 4 | × | 600 | ÷ | ( | t | − | 5 | ) | − | 100 | ) | t | = | 13200 | − | 605 | t |
| 25500 | ÷ | ( | t | − | 5 | ) | × | t | − | 3400 | t | − | t | ( | 5 | ÷ | 4 | × | 600 | ÷ | ( | t | − | 5 | ) | − | 100 | ) | t | = | 13200 | − | 605 | t |
| 方程两边同时乘以: | ( | t | − | 5 | ) |
| 25500 | t | − | 3400 | t | ( | t | − | 5 | ) | − | t | ( | 5 | ÷ | 4 | × | 600 | ÷ | ( | t | − | 5 | ) | − | 100 | ) | t | ( | t | − | 5 | ) | = | 13200 | ( | t | − | 5 | ) | − | 605 | t | ( | t | − | 5 | ) |
| 25500 | t | − | 3400 | t | t | + | 3400 | t | × | 5 | − | t | ( | 5 | ÷ | 4 | × | 600 | ÷ | ( | t | − | 5 | ) | − | 100 | ) | t | ( | t | − | 5 | ) | = | 13200 | ( | t | − | 5 | ) | − | 605 | t | ( | t | − | 5 | ) |
| 25500 | t | − | 3400 | t | t | + | 3400 | t | × | 5 | − | t | ( | 5 | ÷ | 4 | × | 600 | ÷ | ( | t | − | 5 | ) | − | 100 | ) | t | ( | t | − | 5 | ) | = | 13200 | t | − | 13200 | × | 5 | − | 605 | t | ( | t | − | 5 | ) |
| 25500 | t | − | 3400 | t | t | + | 17000 | t | − | t | ( | 5 | ÷ | 4 | × | 600 | ÷ | ( | t | − | 5 | ) | − | 100 | ) | t | ( | t | − | 5 | ) | = | 13200 | t | − | 66000 | − | 605 | t | ( | t | − | 5 | ) |
| 42500 | t | − | 3400 | t | t | − | t | ( | 5 | ÷ | 4 | × | 600 | ÷ | ( | t | − | 5 | ) | − | 100 | ) | t | ( | t | − | 5 | ) | = | 13200 | t | − | 66000 | − | 605 | t | ( | t | − | 5 | ) |
| 42500 | t | − | 3400 | t | t | − | t | × | 5 | ÷ | 4 | × | 600 | ÷ | ( | t | − | 5 | ) | × | t | ( | t | − | 5 | ) | = | 13200 | t | − | 66000 | − | 605 | t | ( | t | − | 5 | ) |
| 42500 | t | − | 3400 | t | t | − | t | × | 5 | ÷ | 4 | × | 600 | ÷ | ( | t | − | 5 | ) | × | t | ( | t | − | 5 | ) | = | 13200 | t | − | 66000 | − | 605 | t | t | + | 605 | t | × | 5 |
| 42500 | t | − | 3400 | t | t | − | t | × | 750 | ÷ | ( | t | − | 5 | ) | × | t | ( | t | − | 5 | ) | + | t | × | 100 | = | 13200 | t | − | 66000 | − | 605 | t | t | + | 3025 | t |
| 42500 | t | − | 3400 | t | t | − | t | × | 750 | ÷ | ( | t | − | 5 | ) | × | t | ( | t | − | 5 | ) | + | t | × | 100 | = | 16225 | t | − | 66000 | − | 605 | t | t |
| 方程两边同时乘以: | ( | t | − | 5 | ) |
| 42500 | t | ( | t | − | 5 | ) | − | 3400 | t | t | ( | t | − | 5 | ) | − | t | × | 750 | t | ( | t | − | 5 | ) | + | t | = | 16225 | t | ( | t | − | 5 | ) | − | 66000 | ( | t | − | 5 | ) | − | 605 | t | t | ( | t | − | 5 | ) |
| 42500 | t | t | − | 42500 | t | × | 5 | − | 3400 | t | t | ( | t | − | 5 | ) | − | t | × | 750 | = | 16225 | t | ( | t | − | 5 | ) | − | 66000 | ( | t | − | 5 | ) | − | 605 | t | t | ( | t | − | 5 | ) |
| 42500 | t | t | − | 42500 | t | × | 5 | − | 3400 | t | t | ( | t | − | 5 | ) | − | t | × | 750 | = | 16225 | t | t | − | 16225 | t | × | 5 | − | 66000 | ( | t | − | 5 | ) | − | 605 | t | t | ( | t | − | 5 | ) |
| 42500 | t | t | − | 212500 | t | − | 3400 | t | t | ( | t | − | 5 | ) | − | t | × | 750 | t | = | 16225 | t | t | − | 81125 | t | − | 66000 | ( | t | − | 5 | ) | − | 605 | t | t | ( | t | − | 5 | ) |
| 42500 | t | t | − | 212500 | t | − | 3400 | t | t | t | + | 3400 | t | t | = | 16225 | t | t | − | 81125 | t | − | 66000 | ( | t | − | 5 | ) | − | 605 | t | t | ( | t | − | 5 | ) |
| 42500 | t | t | − | 212500 | t | − | 3400 | t | t | t | + | 3400 | t | t | = | 16225 | t | t | − | 81125 | t | − | 66000 | t | + | 66000 | × | 5 | − | 605 | t | t |
| 42500 | t | t | − | 212500 | t | − | 3400 | t | t | t | + | 17000 | t | t | = | 16225 | t | t | − | 81125 | t | − | 66000 | t | + | 330000 | − | 605 | t | t | ( | t | − | 5 | ) |