( | 99 | − | 81 | ) | ÷ | ( | 81 | − | 67 | ) | = | ( | 100 | − | T | ) | ÷ | ( | T | − | 86 | ) |
方程两边同时乘以: | ( | 81 | − | 67 | ) | , | ( | T | − | 86 | ) |
( | 99 | − | 81 | ) | ( | T | − | 86 | ) | = | ( | 100 | − | T | ) | ( | 81 | − | 67 | ) |
99 | ( | T | − | 86 | ) | − | 81 | ( | T | − | 86 | ) | = | ( | 100 | − | T | ) | ( | 81 | − | 67 | ) |
99 | ( | T | − | 86 | ) | − | 81 | ( | T | − | 86 | ) | = | 100 | ( | 81 | − | 67 | ) | − | T | ( | 81 | − | 67 | ) |
99 | T | − | 99 | × | 86 | − | 81 | ( | T | − | 86 | ) | = | 100 | ( | 81 | − | 67 | ) | − | T | ( | 81 | − | 67 | ) |
99 | T | − | 99 | × | 86 | − | 81 | ( | T | − | 86 | ) | = | 100 | × | 81 | − | 100 | × | 67 | − | T | ( | 81 | − | 67 | ) |
99 | T | − | 8514 | − | 81 | ( | T | − | 86 | ) | = | 8100 | − | 6700 | − | T | ( | 81 | − | 67 | ) |
99 | T | − | 8514 | − | 81 | ( | T | − | 86 | ) | = | 1400 | − | T | ( | 81 | − | 67 | ) |
99 | T | − | 8514 | − | 81 | T | + | 81 | × | 86 | = | 1400 | − | T | ( | 81 | − | 67 | ) |
99 | T | − | 8514 | − | 81 | T | + | 81 | × | 86 | = | 1400 | − | T | × | 81 | + | T | × | 67 |
99 | T | − | 8514 | − | 81 | T | + | 6966 | = | 1400 | − | T | × | 81 | + | T | × | 67 |
18 | T | − | 1548 | = | 1400 | − | 14 | T |
18 | T | + | 14 | T | = | 1400 | + | 1548 |
32 | T | = | 1400 | + | 1548 |
32 | T | = | 2948 |
T | = | 2948 | ÷ | 32 |
= | 2948 | × | 1 32 |
= | 737 | × | 1 8 |
T | = | 737 8 |
T | = | 92.125 |