x | − | ( | ( | x | + | 336350 | − | 60000 | ) | × | 1 5 | − | 16920 | − | 39350 | ) | = | 19500 |
方程左边 = | x | − | ( | x | + | 336350 | − | 60000 | ) | × | 1 5 | + | 16920 | + | 39350 |
= | x | − | ( | x | + | 336350 | − | 60000 | ) | × | 1 5 | + | 56270 |
= | x | − | x | × | 1 5 | − | 336350 | × | 1 5 | + | 60000 | × | 1 5 | + | 56270 |
= | x | − | x | × | 1 5 | − | 67270 | + | 12000 | + | 56270 |
= | 4 5 | x | + | 1000 |
4 5 | x | + | 1000 | = | 19500 |
4 5 | x | = | 19500 | − | 1000 |
4 5 | x | = | 18500 |
x | = | 18500 | ÷ | 4 5 |
= | 18500 | × | 5 4 |
= | 4625 | × | 5 |
x | = | 23125 |