( | 57 2 | − | 20 | ) | ÷ | ( | 30 | − | 57 2 | ) | = | ( | a | − | 201 200 | ) | ÷ | ( | 8007 10000 | − | a | ) |
方程两边同时乘以: | ( | 30 | − | 57 2 | ) | , | ( | 8007 10000 | − | a | ) |
( | 57 2 | − | 20 | ) | ( | 8007 10000 | − | a | ) | = | ( | a | − | 201 200 | ) | ( | 30 | − | 57 2 | ) |
57 2 | ( | 8007 10000 | − | a | ) | − | 20 | ( | 8007 10000 | − | a | ) | = | ( | a | − | 201 200 | ) | ( | 30 | − | 57 2 | ) |
57 2 | ( | 8007 10000 | − | a | ) | − | 20 | ( | 8007 10000 | − | a | ) | = | a | ( | 30 | − | 57 2 | ) | − | 201 200 | ( | 30 | − | 57 2 | ) |
57 2 | × | 8007 10000 | − | 57 2 | a | − | 20 | ( | 8007 10000 | − | a | ) | = | a | ( | 30 | − | 57 2 | ) | − | 201 200 | ( | 30 | − | 57 2 | ) |
57 2 | × | 8007 10000 | − | 57 2 | a | − | 20 | ( | 8007 10000 | − | a | ) | = | a | × | 30 | − | a | × | 57 2 | − | 201 200 | ( | 30 | − | 57 2 | ) |
456399 20000 | − | 57 2 | a | − | 20 | ( | 8007 10000 | − | a | ) | = | a | × | 30 | − | a | × | 57 2 | − | 201 200 | ( | 30 | − | 57 2 | ) |
456399 20000 | − | 57 2 | a | − | 20 | ( | 8007 10000 | − | a | ) | = | 3 2 | a | − | 201 200 | ( | 30 | − | 57 2 | ) |
456399 20000 | − | 57 2 | a | − | 20 | × | 8007 10000 | + | 20 | a | = | 3 2 | a | − | 201 200 | ( | 30 | − | 57 2 | ) |
456399 20000 | − | 57 2 | a | − | 20 | × | 8007 10000 | + | 20 | a | = | 3 2 | a | − | 201 200 | × | 30 | + | 201 200 | × | 57 2 |
456399 20000 | − | 57 2 | a | − | 8007 500 | + | 20 | a | = | 3 2 | a | − | 603 20 | + | 11457 400 |
136119 20000 | − | 17 2 | a | = | 3 2 | a | − | 603 400 |
- | 17 2 | a | − | 3 2 | a | = | - | 603 400 | − | 136119 20000 |
- | 10 | a | = | - | 603 400 | − | 136119 20000 |
- | 10 | a | = | - | 166269 20000 |
166269 20000 | = | 10 | a |
10 | a | = | 166269 20000 |
a | = | 166269 20000 | ÷ | 10 |
= | 166269 20000 | × | 1 10 |
a | = | 166269 200000 |
a | = | 0.831345 |