| ( | 99 | − | 83 | ) | ÷ | ( | 83 | − | 62 | ) | = | ( | 100 | − | T | ) | ÷ | ( | T | − | 86 | ) |
| 方程两边同时乘以: | ( | 83 | − | 62 | ) | , | ( | T | − | 86 | ) |
| ( | 99 | − | 83 | ) | ( | T | − | 86 | ) | = | ( | 100 | − | T | ) | ( | 83 | − | 62 | ) |
| 99 | ( | T | − | 86 | ) | − | 83 | ( | T | − | 86 | ) | = | ( | 100 | − | T | ) | ( | 83 | − | 62 | ) |
| 99 | ( | T | − | 86 | ) | − | 83 | ( | T | − | 86 | ) | = | 100 | ( | 83 | − | 62 | ) | − | T | ( | 83 | − | 62 | ) |
| 99 | T | − | 99 | × | 86 | − | 83 | ( | T | − | 86 | ) | = | 100 | ( | 83 | − | 62 | ) | − | T | ( | 83 | − | 62 | ) |
| 99 | T | − | 99 | × | 86 | − | 83 | ( | T | − | 86 | ) | = | 100 | × | 83 | − | 100 | × | 62 | − | T | ( | 83 | − | 62 | ) |
| 99 | T | − | 8514 | − | 83 | ( | T | − | 86 | ) | = | 8300 | − | 6200 | − | T | ( | 83 | − | 62 | ) |
| 99 | T | − | 8514 | − | 83 | ( | T | − | 86 | ) | = | 2100 | − | T | ( | 83 | − | 62 | ) |
| 99 | T | − | 8514 | − | 83 | T | + | 83 | × | 86 | = | 2100 | − | T | ( | 83 | − | 62 | ) |
| 99 | T | − | 8514 | − | 83 | T | + | 83 | × | 86 | = | 2100 | − | T | × | 83 | + | T | × | 62 |
| 99 | T | − | 8514 | − | 83 | T | + | 7138 | = | 2100 | − | T | × | 83 | + | T | × | 62 |
| 16 | T | − | 1376 | = | 2100 | − | 21 | T |
| 16 | T | + | 21 | T | = | 2100 | + | 1376 |
| 37 | T | = | 2100 | + | 1376 |
| 37 | T | = | 3476 |
| T | = | 3476 | ÷ | 37 |
| = | 3476 | × | 1 37 |
| T | = | 3476 37 |
| T | = | 93.945946 |