10 100 | = | 8 100 | ( | 1 | ÷ | 55 100 | ) | x | ÷ | ( | 1 | − | 8 100 | ( | 1 | ÷ | 55 100 | ) | x | ) |
方程两边同时乘以: | ( | 1 | − | 8 100 | ( | 1 | ÷ | 55 100 | ) | x | ) |
10 100 | ( | 1 | − | 8 100 | ( | 1 | ÷ | 55 100 | ) | x | ) | = | 8 100 | ( | 1 | ÷ | 55 100 | ) | x |
10 100 | × | 1 | − | 10 100 | × | 8 100 | ( | 1 | ÷ | 55 100 | ) | x | = | 8 100 | ( | 1 | ÷ | 55 100 | ) | x |
10 100 | × | 1 | − | 10 100 | × | 8 100 | ( | 1 | ÷ | 55 100 | ) | x | = | 8 100 | × | 1 | ÷ | 55 100 | × | x |
1 10 | − | 1 125 | ( | 1 | ÷ | 55 100 | ) | x | = | 8 55 | x |
1 10 | − | 1 125 | × | 1 | ÷ | 55 100 | × | x | = | 8 55 | x |
1 10 | − | 4 275 | x | = | 8 55 | x |
- | 4 275 | x | − | 8 55 | x | = | - | 1 10 |
- | 4 25 | x | = | - | 1 10 |
1 10 | = | 4 25 | x |
4 25 | x | = | 1 10 |
x | = | 1 10 | ÷ | 4 25 |
= | 1 10 | × | 25 4 |
= | 1 2 | × | 5 4 |
x | = | 5 8 |
x | = | 0.625 |