5 2 | ( | T | − | 350 | ) | = | - | T | + | 350 | × | 50 | ÷ | 200 |
方程左边 = | 5 2 | T | − | 5 2 | × | 350 |
= | 5 2 | T | − | 875 |
5 2 | T | − | 875 | = | - | T | + | 350 | × | 50 | ÷ | 200 |
方程右边 = | - | T | + | 175 2 |
5 2 | T | − | 875 | = | - | T | + | 175 2 |
5 2 | T | + | T | = | 175 2 | + | 875 |
7 2 | T | = | 175 2 | + | 875 |
7 2 | T | = | 1925 2 |
T | = | 1925 2 | ÷ | 7 2 |
= | 1925 2 | × | 2 7 |
= | 275 | × | 1 |
T | = | 275 |