7 10 | = | ( | 33 100 | × | 1097 100 | + | n | × | 199 20 | ) | ÷ | 33 100 | + | n |
| 方程右边 = | 33 100 | × | 1097 100 | × | 100 33 | + | n | × | 199 20 | × | 100 33 | + | n |
| = | 1097 100 | + | n | × | 995 33 | + | n |
| = | 1097 100 | + | 1028 33 | n |
7 10 | = | 1097 100 | + | 1028 33 | n |
| - | 1028 33 | n | = | 1097 100 | − | 7 10 |
| - | 1028 33 | n | = | 1027 100 |
| - | 1027 100 | = | 1028 33 | n |
1028 33 | n | = | - | 1027 100 |
| n | = | - | 1027 100 | ÷ | 1028 33 |
| = | - | 1027 100 | × | 33 1028 |
| n | = | - | 33891 102800 |
| n | = | - 0.329679 |