77 40 | X | + | ( | 1000 | ÷ | 126 | ) | ( | 940 | − | X | ) | = | 2860 |
方程左边 = | 77 40 | X | + | 1000 | ÷ | 126 | × | ( | 940 | − | X | ) |
= | 77 40 | X | + | 500 63 | ( | 940 | − | X | ) |
= | 77 40 | X | + | 500 63 | × | 940 | − | 500 63 | X |
= | 77 40 | X | + | 470000 63 | − | 500 63 | X |
= | - | 15149 2520 | X | + | 470000 63 |
- | 15149 2520 | X | + | 470000 63 | = | 2860 |
- | 15149 2520 | X | = | 2860 | − | 470000 63 |
- | 15149 2520 | X | = | - | 289820 63 |
289820 63 | = | 15149 2520 | X |
15149 2520 | X | = | 289820 63 |
X | = | 289820 63 | ÷ | 15149 2520 |
= | 289820 63 | × | 2520 15149 |
= | 289820 | × | 40 15149 |
X | = | 11592800 15149 |
X | = | 765.251832 |