( | 66 | + | x | ) | × | 3355 | − | 1700 | ( | 59 | + | x | ) | = | 30 | ( | 66 | + | x | ) | ( | 59 | + | x | ) |
方程左边 = | 66 | × | 3355 | + | x | × | 3355 | − | 1700 | ( | 59 | + | x | ) |
= | 221430 | + | x | × | 3355 | − | 1700 | ( | 59 | + | x | ) |
= | 221430 | + | 3355 | x | − | 1700 | × | 59 | − | 1700 | x |
= | 221430 | + | 3355 | x | − | 100300 | − | 1700 | x |
= | 121130 | + | 1655 | x |
121130 | + | 1655 | x | = | 30 | ( | 66 | + | x | ) | ( | 59 | + | x | ) |
方程右边 = | 30 | × | 66 | ( | 59 | + | x | ) | + | 30 | x | ( | 59 | + | x | ) |
= | 1980 | ( | 59 | + | x | ) | + | 30 | x | ( | 59 | + | x | ) |
= | 1980 | × | 59 | + | 1980 | x | + | 30 | x | ( | 59 | + | x | ) |
= | 116820 | + | 1980 | x | + | 30 | x | ( | 59 | + | x | ) |
= | 116820 | + | 1980 | x | + | 30 | x | × | 59 | + | 30 | x | x |
= | 116820 | + | 1980 | x | + | 1770 | x | + | 30 | x | x |
= | 116820 | + | 3750 | x | + | 30 | x | x |
121130 | + | 1655 | x | = | 116820 | + | 3750 | x | + | 30 | x | x |
x1=2 |