( | ( | 220 | + | 220 | ) | × | 78 | − | x | ) | × | 17 20 | + | 8 | × | 78 | = | 45364 | − | 17012 |
方程左边 = | ( | ( | 220 | + | 220 | ) | × | 78 | − | x | ) | × | 17 20 | + | 624 |
( | ( | 220 | + | 220 | ) | × | 78 | − | x | ) | × | 17 20 | + | 624 | = | 45364 | − | 17012 |
方程左边 = | ( | 220 | + | 220 | ) | × | 78 | × | 17 20 | − | x | × | 17 20 | + | 624 |
= | ( | 220 | + | 220 | ) | × | 663 10 | − | x | × | 17 20 | + | 624 |
= | 220 | × | 663 10 | + | 220 | × | 663 10 | − | 17 20 | x | + | 624 |
= | 14586 | + | 14586 | − | 17 20 | x | + | 624 |
= | 29796 | − | 17 20 | x |
29796 | − | 17 20 | x | = | 45364 | − | 17012 |
方程右边 = | 28352 |
29796 | − | 17 20 | x | = | 28352 |
- | 17 20 | x | = | 28352 | − | 29796 |
- | 17 20 | x | = | - | 1444 |
1444 | = | 17 20 | x |
17 20 | x | = | 1444 |
x | = | 1444 | ÷ | 17 20 |
= | 1444 | × | 20 17 |
x | = | 28880 17 |
x | = | 1698.823529 |