( | x | + | 225 | ) | ÷ | ( | 9 | x | + | 225 | ) | = | 4 | x | ÷ | ( | 25 | x | + | 2025 | ) |
方程两边同时乘以: | ( | 9 | x | + | 225 | ) | , | ( | 25 | x | + | 2025 | ) |
( | x | + | 225 | ) | ( | 25 | x | + | 2025 | ) | = | 4 | x | ( | 9 | x | + | 225 | ) |
x | ( | 25 | x | + | 2025 | ) | + | 225 | ( | 25 | x | + | 2025 | ) | = | 4 | x | ( | 9 | x | + | 225 | ) |
x | ( | 25 | x | + | 2025 | ) | + | 225 | ( | 25 | x | + | 2025 | ) | = | 4 | x | × | 9 | x | + | 4 | x | × | 225 |
x | ( | 25 | x | + | 2025 | ) | + | 225 | ( | 25 | x | + | 2025 | ) | = | 36 | x | x | + | 900 | x |
x | × | 25 | x | + | x | × | 2025 | + | 225 | ( | 25 | x | + | 2025 | ) | = | 36 | x | x | + | 900 | x |
x | × | 25 | x | + | 2025 | x | + | 225 | × | 25 | x | + | 225 | × | 2025 | = | 36 | x | x | + | 900 | x |
x | × | 25 | x | + | 2025 | x | + | 5625 | x | + | 455625 | = | 36 | x | x | + | 900 | x |
x | × | 25 | x | + | 7650 | x | + | 455625 | = | 36 | x | x | + | 900 | x |
x1= | - | 675 11 |