2150000 | ( | 1 | − | 39 2500 | ) | − | 1312391 | − | ( | 2150000 | ÷ | 109 100 | × | 9 100 | − | 145500 | ÷ | 109 100 | × | 9 100 | − | 100000 | ÷ | 113 100 | × | 13 100 | − | 950700 | ÷ | 109 100 | × | 9 100 | ) | × | 28 25 | = | x |
方程左边 = | 2150000 | × | 1 | − | 2150000 | × | 39 2500 | − | 1312391 | − | ( | 2150000 | ÷ | 109 100 | × | 9 100 | − | 145500 | ÷ | 109 100 | × | 9 100 | − | 100000 | ÷ | 113 100 | × | 13 100 | − | 950700 | ÷ | 109 100 | × | 9 100 | ) | × | 28 25 |
= | 2150000 | − | 33540 | − | 1312391 | − | ( | 2150000 | ÷ | 109 100 | × | 9 100 | − | 145500 | ÷ | 109 100 | × | 9 100 | − | 100000 | ÷ | 113 100 | × | 13 100 | − | 950700 | ÷ | 109 100 | × | 9 100 | ) | × | 28 25 |
= | 804069 | − | ( | 2150000 | ÷ | 109 100 | × | 9 100 | − | 145500 | ÷ | 109 100 | × | 9 100 | − | 100000 | ÷ | 113 100 | × | 13 100 | − | 950700 | ÷ | 109 100 | × | 9 100 | ) | × | 28 25 |
= | 804069 | − | 2150000 | ÷ | 109 100 | × | 9 100 | × | 28 25 | + | 145500 | ÷ | 109 100 | × | 9 100 | × | 28 25 | + | 100000 | ÷ | 113 100 | × | 13 100 |
= | 804069 | − | 21672000 109 | + | 1466640 109 | + | 1456000 113 | + | 9583056 109 | + | 1008000 109 | + | 5893524 2825 | + | x | × | 84 2575 |