69 5 | × | 300 | x | ( | 20463 25 | − | 355 | + | x | ÷ | 2 | ) | = | 96366600 |
方程左边 = | 4140 | x | ( | 20463 25 | − | 355 | + | x | ÷ | 2 | ) |
4140 | x | ( | 20463 25 | − | 355 | + | x | ÷ | 2 | ) | = | 96366600 |
方程左边 = | 4140 | x | × | 20463 25 | − | 4140 | x | × | 355 | + | 4140 | x | x | ÷ | 2 |
= | 16943364 5 | x | − | 1469700 | x | + | 2070 | x | x |
= | 9594864 5 | x | + | 2070 | x | x |
9594864 5 | x | + | 2070 | x | x | = | 96366600 |