8 5 | ( | x | − | 80 | ) | + | 2 5 | x | = | ( | 12 5 | − | 320 | ÷ | ( | x | + | 60 | ) | ) | ( | x | + | 60 | ) |
8 5 | x | − | 8 5 | × | 80 | + | 2 5 | x | = | ( | 12 5 | − | 320 | ÷ | ( | x | + | 60 | ) | ) | ( | x | + | 60 | ) |
8 5 | x | − | 8 5 | × | 80 | + | 2 5 | x | = | 12 5 | ( | x | + | 60 | ) | − | 320 | ÷ | ( | x | + | 60 | ) | × | ( | x | + | 60 | ) |
8 5 | x | − | 128 | + | 2 5 | x | = | 12 5 | ( | x | + | 60 | ) | − | 320 | ÷ | ( | x | + | 60 | ) | × | ( | x | + | 60 | ) |
2 | x | − | 128 | = | 12 5 | ( | x | + | 60 | ) | − | 320 | ÷ | ( | x | + | 60 | ) | × | ( | x | + | 60 | ) |
方程两边同时乘以: | ( | x | + | 60 | ) |
2 | x | ( | x | + | 60 | ) | − | 128 | ( | x | + | 60 | ) | = | 12 5 | ( | x | + | 60 | ) | ( | x | + | 60 | ) | − | 320 | ( | x | + | 60 | ) |
2 | x | x | + | 2 | x | × | 60 | − | 128 | ( | x | + | 60 | ) | = | 12 5 | ( | x | + | 60 | ) | ( | x | + | 60 | ) | − | 320 | ( | x | + | 60 | ) |
2 | x | x | + | 2 | x | × | 60 | − | 128 | ( | x | + | 60 | ) | = | 12 5 | x | ( | x | + | 60 | ) | + | 12 5 | × | 60 | ( | x | + | 60 | ) | − | 320 | ( | x | + | 60 | ) |
2 | x | x | + | 120 | x | − | 128 | ( | x | + | 60 | ) | = | 12 5 | x | ( | x | + | 60 | ) | + | 144 | ( | x | + | 60 | ) | − | 320 | ( | x | + | 60 | ) |
2 | x | x | + | 120 | x | − | 128 | x | − | 128 | × | 60 | = | 12 5 | x | ( | x | + | 60 | ) | + | 144 | ( | x | + | 60 | ) | − | 320 | ( | x | + | 60 | ) |
2 | x | x | + | 120 | x | − | 128 | x | − | 128 | × | 60 | = | 12 5 | x | x | + | 12 5 | x | × | 60 | + | 144 | ( | x | + | 60 | ) | − | 320 | ( | x | + | 60 | ) |
2 | x | x | + | 120 | x | − | 128 | x | − | 7680 | = | 12 5 | x | x | + | 144 | x | + | 144 | ( | x | + | 60 | ) | − | 320 | ( | x | + | 60 | ) |
2 | x | x | − | 8 | x | − | 7680 | = | 12 5 | x | x | + | 144 | x | + | 144 | ( | x | + | 60 | ) | − | 320 | ( | x | + | 60 | ) |
2 | x | x | − | 8 | x | − | 7680 | = | 12 5 | x | x | + | 144 | x | + | 144 | x | + | 144 | × | 60 | − | 320 | ( | x | + | 60 | ) |
2 | x | x | − | 8 | x | − | 7680 | = | 12 5 | x | x | + | 144 | x | + | 144 | x | + | 8640 | − | 320 | ( | x | + | 60 | ) |
2 | x | x | − | 8 | x | − | 7680 | = | 12 5 | x | x | + | 288 | x | + | 8640 | − | 320 | ( | x | + | 60 | ) |
2 | x | x | − | 8 | x | − | 7680 | = | 12 5 | x | x | + | 288 | x | + | 8640 | − | 320 | x | − | 320 | × | 60 |
2 | x | x | − | 8 | x | − | 7680 | = | 12 5 | x | x | + | 288 | x | + | 8640 | − | 320 | x | − | 19200 |
2 | x | x | − | 8 | x | − | 7680 | = | 12 5 | x | x | − | 32 | x | − | 10560 |