2997 10 | ( | 10101 1000 | − | r | ) | = | ( | r | + | 1000 | ) | × | 3 10 |
方程左边 = | 2997 10 | × | 10101 1000 | − | 2997 10 | r |
= | 30272697 10000 | − | 2997 10 | r |
30272697 10000 | − | 2997 10 | r | = | ( | r | + | 1000 | ) | × | 3 10 |
方程右边 = | r | × | 3 10 | + | 1000 | × | 3 10 |
= | r | × | 3 10 | + | 300 |
30272697 10000 | − | 2997 10 | r | = | 3 10 | r | + | 300 |
- | 2997 10 | r | − | 3 10 | r | = | 300 | − | 30272697 10000 |
- | 300 | r | = | 300 | − | 30272697 10000 |
- | 300 | r | = | - | 27272697 10000 |
27272697 10000 | = | 300 | r |
300 | r | = | 27272697 10000 |
r | = | 27272697 10000 | ÷ | 300 |
= | 27272697 10000 | × | 1 300 |
= | 9090899 10000 | × | 1 100 |
r | = | 9090899 1000000 |
r | = | 9.090899 |