X | − | ( | X | − | 800 | ) | × | 1 5 | − | X | ÷ | 101 100 | × | 1 100 | − | X | ÷ | 101 100 | × | 1 100 | × | 7 100 | × | 1 2 | = | 3000 |
方程左边 = | X | − | ( | X | − | 800 | ) | × | 1 5 | − | X | × | 1 101 | − | X | × | 7 20200 |
= | 19993 20200 | X | − | ( | X | − | 800 | ) | × | 1 5 |
19993 20200 | X | − | ( | X | − | 800 | ) | × | 1 5 | = | 3000 |
方程左边 = | 19993 20200 | X | − | X | × | 1 5 | + | 800 | × | 1 5 |
= | 19993 20200 | X | − | X | × | 1 5 | + | 160 |
= | 15953 20200 | X | + | 160 |
15953 20200 | X | + | 160 | = | 3000 |
15953 20200 | X | = | 3000 | − | 160 |
15953 20200 | X | = | 2840 |
X | = | 2840 | ÷ | 15953 20200 |
= | 2840 | × | 20200 15953 |
X | = | 57368000 15953 |
X | = | 3596.063436 |