49 5 | x | = | 49 5 | × | 4 | + | 507 10 | + | 31 1000 | ( | 20 | + | x | ) | ÷ | 53 1000 | × | 71 200 | ÷ | 71 200 | ÷ | 2 | + | 7 200 | × | 15 | ÷ | 11 500 |
| 方程右边 = | 196 5 | + | 507 10 | + | 2201 7526 | ( | 20 | + | x | ) | + | 54621 6875 |
| = | 1345367 13750 | + | 2201 7526 | ( | 20 | + | x | ) |
49 5 | x | = | 1345367 13750 | + | 2201 7526 | ( | 20 | + | x | ) |
| 方程右边 = | 1345367 13750 | + | 2201 7526 | × | 20 | + | 2201 7526 | x |
| = | 1345367 13750 | + | 22010 3763 | + | 2201 7526 | x |
| = | 75566951 728750 | + | 2201 7526 | x |
49 5 | x | = | 75566951 728750 | + | 2201 7526 | x |
49 5 | x | − | 2201 7526 | x | = | 75566951 728750 |
5039 530 | x | = | 75566951 728750 |
| x | = | 75566951 728750 | ÷ | 5039 530 |
| = | 75566951 728750 | × | 530 5039 |
| = | 75566951 1375 | × | 1 5039 |
| x | = | 75566951 6928625 |
| x | = | 10.906486 |