15706 | = | ( | ( | 220 | + | 220 | ) | × | 42 | − | x | ) | × | 9 10 | + | 8 | × | 42 |
方程右边 = | ( | ( | 220 | + | 220 | ) | × | 42 | − | x | ) | × | 9 10 | + | 336 |
15706 | = | ( | ( | 220 | + | 220 | ) | × | 42 | − | x | ) | × | 9 10 | + | 336 |
方程右边 = | ( | 220 | + | 220 | ) | × | 42 | × | 9 10 | − | x | × | 9 10 | + | 336 |
= | ( | 220 | + | 220 | ) | × | 189 5 | − | x | × | 9 10 | + | 336 |
= | 220 | × | 189 5 | + | 220 | × | 189 5 | − | 9 10 | x | + | 336 |
= | 8316 | + | 8316 | − | 9 10 | x | + | 336 |
= | 16968 | − | 9 10 | x |
15706 | = | 16968 | − | 9 10 | x |
9 10 | x | = | 16968 | − | 15706 |
9 10 | x | = | 1262 |
x | = | 1262 | ÷ | 9 10 |
= | 1262 | × | 10 9 |
x | = | 12620 9 |
x | = | 1402.222222 |