13000 | ÷ | 800 | × | x | − | 6500 | − | 3000 | ÷ | 800 | × | x | − | 345 | ÷ | 800 | × | x | = | 2000 |
方程左边 = | 65 4 | x | − | 6500 | − | 15 4 | x | − | 69 160 | x |
= | 1931 160 | x | − | 6500 |
1931 160 | x | − | 6500 | = | 2000 |
1931 160 | x | = | 2000 | + | 6500 |
1931 160 | x | = | 8500 |
x | = | 8500 | ÷ | 1931 160 |
= | 8500 | × | 160 1931 |
x | = | 1360000 1931 |
x | = | 704.298291 |