( | 1039 250 | − | y | ) | × | 1739 1000000 | ( | 88000 | + | 87044 | y | ) | = | 0 |
方程左边 = | 1039 250 | × | 1739 1000000 | ( | 88000 | + | 87044 | y | ) | − | y | × | 1739 1000000 | ( | 88000 | + | 87044 | y | ) |
= | 1806821 250000000 | ( | 88000 | + | 87044 | y | ) | − | y | × | 1739 1000000 | ( | 88000 | + | 87044 | y | ) |
= | 1806821 250000000 | × | 88000 | + | 1806821 250000000 | × | 87044 | y | − | y | × | 1739 1000000 | ( | 88000 | + | 87044 | y | ) |
y1= | 1039 250 |