85 | × | 3 | ( | x | − | 3 2 | ) | + | 85 | × | 3 | ( | x | − | 87 2 | ) | + | 2 | × | 39 | × | 3 | ( | x | − | 45 2 | ) | = | 85 | × | 6 | ( | 400 | − | 3 | − | x | ) |
方程左边 = | 255 | ( | x | − | 3 2 | ) | + | 255 | ( | x | − | 87 2 | ) | + | 234 | ( | x | − | 45 2 | ) |
255 | ( | x | − | 3 2 | ) | + | 255 | ( | x | − | 87 2 | ) | + | 234 | ( | x | − | 45 2 | ) | = | 85 | × | 6 | ( | 400 | − | 3 | − | x | ) |
方程左边 = | 255 | x | − | 255 | × | 3 2 | + | 255 | ( | x | − | 87 2 | ) | + | 234 | ( | x | − | 45 2 | ) |
= | 255 | x | − | 765 2 | + | 255 | ( | x | − | 87 2 | ) | + | 234 | ( | x | − | 45 2 | ) |
= | 255 | x | − | 765 2 | + | 255 | x | − | 255 | × | 87 2 | + | 234 | ( | x | − | 45 2 | ) |
= | 255 | x | − | 765 2 | + | 255 | x | − | 22185 2 | + | 234 | ( | x | − | 45 2 | ) |
= | 510 | x | − | 11475 | + | 234 | ( | x | − | 45 2 | ) |
= | 510 | x | − | 11475 | + | 234 | x | − | 234 | × | 45 2 |
= | 510 | x | − | 11475 | + | 234 | x | − | 5265 |
= | 744 | x | − | 16740 |
744 | x | − | 16740 | = | 85 | × | 6 | ( | 400 | − | 3 | − | x | ) |
方程右边 = | 510 | ( | 400 | − | 3 | − | x | ) |
744 | x | − | 16740 | = | 510 | ( | 400 | − | 3 | − | x | ) |
方程右边 = | 510 | × | 400 | − | 510 | × | 3 | − | 510 | x |
= | 204000 | − | 1530 | − | 510 | x |
= | 202470 | − | 510 | x |
744 | x | − | 16740 | = | 202470 | − | 510 | x |
744 | x | + | 510 | x | = | 202470 | + | 16740 |
1254 | x | = | 202470 | + | 16740 |
1254 | x | = | 219210 |
x | = | 219210 | ÷ | 1254 |
= | 219210 | × | 1 1254 |
= | 36535 | × | 1 209 |
x | = | 36535 209 |
x | = | 174.808612 |