( | 1 5 | x | + | 424 | ) | + | ( | 21 100 | + | 212 | ) | = | 8330 |
方程左边 = | 1 5 | x | + | 424 | + | ( | 21 100 | + | 212 | ) |
= | 1 5 | x | + | 424 | + | 21 100 | + | 212 |
= | 1 5 | x | + | 63621 100 |
1 5 | x | + | 63621 100 | = | 8330 |
1 5 | x | = | 8330 | − | 63621 100 |
1 5 | x | = | 769379 100 |
x | = | 769379 100 | ÷ | 1 5 |
= | 769379 100 | × | 5 |
= | 769379 20 | × | 1 |
x | = | 769379 20 |
x | = | 38468.95 |