679 | × | 117 25 | + | 47 10 | x | = | 679 | × | 47 10 | + | 47 10 | x |
方程左边 = | 79443 25 | + | 47 10 | x |
79443 25 | + | 47 10 | x | = | 679 | × | 47 10 | + | 47 10 | x |
方程右边 = | 31913 10 | + | 47 10 | x |
79443 25 | + | 47 10 | x | = | 31913 10 | + | 47 10 | x |
47 10 | x | − | 47 10 | x | = | 31913 10 | − | 79443 25 |
0 | x | = | 31913 10 | − | 79443 25 |
0 | x | = | 679 50 |