( | x | − | 70 | ) | ( | - | 2 | + | 240 | ) | = | 1200 |
方程左边 = | x | ( | - | 2 | + | 240 | ) | − | 70 | ( | - | 2 | + | 240 | ) |
= | - | x | × | 2 | + | x | × | 240 | − | 70 | ( | - | 2 | + | 240 | ) |
= | 238 | x | − | 70 | ( | - | 2 | + | 240 | ) |
= | 238 | x | + | 70 | × | 2 | − | 70 | × | 240 |
= | 238 | x | + | 140 | − | 16800 |
= | 238 | x | − | 16660 |
238 | x | − | 16660 | = | 1200 |
238 | x | = | 1200 | + | 16660 |
238 | x | = | 17860 |
x | = | 17860 | ÷ | 238 |
= | 17860 | × | 1 238 |
= | 8930 | × | 1 119 |
x | = | 8930 119 |
x | = | 75.042017 |