( | 21 40 | W | − | 180 | ) | ÷ | 130 | = | ( | 21 40 | W | − | 186 | ) | ÷ | 80 |
方程左边 = | 21 40 | W | × | 1 130 | − | 180 | × | 1 130 |
= | 21 5200 | W | − | 18 13 |
21 5200 | W | − | 18 13 | = | ( | 21 40 | W | − | 186 | ) | ÷ | 80 |
方程右边 = | 21 40 | W | × | 1 80 | − | 186 | × | 1 80 |
= | 21 3200 | W | − | 93 40 |
21 5200 | W | − | 18 13 | = | 21 3200 | W | − | 93 40 |
21 5200 | W | − | 21 3200 | W | = | - | 93 40 | + | 18 13 |
- | 21 8320 | W | = | - | 93 40 | + | 18 13 |
- | 21 8320 | W | = | - | 489 520 |
489 520 | = | 21 8320 | W |
21 8320 | W | = | 489 520 |
W | = | 489 520 | ÷ | 21 8320 |
= | 489 520 | × | 8320 21 |
= | 163 | × | 16 7 |
W | = | 2608 7 |
W | = | 372.571429 |