( | 180 | − | 2598 5 | x | ) | ( | 47 50 | − | 171 500 | x | ) | + | 368 5 | − | 4924 5 | x | = | 0 |
方程左边 = | 180 | ( | 47 50 | − | 171 500 | x | ) | − | 2598 5 | x | ( | 47 50 | − | 171 500 | x | ) | + | 368 5 | − | 4924 5 | x |
= | 180 | × | 47 50 | − | 180 | × | 171 500 | x | − | 2598 5 | x | ( | 47 50 | − | 171 500 | x | ) | + | 368 5 | − | 4924 5 | x |
= | 846 5 | − | 1539 25 | x | − | 2598 5 | x | ( | 47 50 | − | 171 500 | x | ) | + | 368 5 | − | 4924 5 | x |
= | 1214 5 | − | 26159 25 | x | − | 2598 5 | x | ( | 47 50 | − | 171 500 | x | ) |
= | 1214 5 | − | 26159 25 | x | − | 2598 5 | x | × | 47 50 | + | 2598 5 | x | × | 171 500 | x |
= | 1214 5 | − | 26159 25 | x | − | 61053 125 | x | + | 222129 1250 | x | x |
= | 1214 5 | − | 191848 125 | x | + | 222129 1250 | x | x |
1214 5 | − | 191848 125 | x | + | 222129 1250 | x | x | = | 0 |