| 10000 | ÷ | x | + | 10000 | ÷ | ( | x | + | 207 4 | ) | + | 10000 | ÷ | ( | x | + | 115 4 | ) | = | 150 |
| 方程两边同时乘以: | x |
| 10000 | + | 10000 | ÷ | ( | x | + | 207 4 | ) | × | x | + | 10000 | ÷ | ( | x | + | 115 4 | ) | × | x | = | 150 | x |
| 方程两边同时乘以: | ( | x | + | 207 4 | ) |
| 10000 | ( | x | + | 207 4 | ) | + | 10000 | x | + | 10000 | ÷ | ( | x | + | 115 4 | ) | × | x | ( | x | + | 207 4 | ) | = | 150 | x | ( | x | + | 207 4 | ) |
| 10000 | x | + | 10000 | × | 207 4 | + | 10000 | x | + | 10000 | ÷ | ( | x | + | 115 4 | ) | × | x | ( | x | + | 207 4 | ) | = | 150 | x | ( | x | + | 207 4 | ) |
| 10000 | x | + | 10000 | × | 207 4 | + | 10000 | x | + | 10000 | ÷ | ( | x | + | 115 4 | ) | × | x | ( | x | + | 207 4 | ) | = | 150 | x | x | + | 150 | x | × | 207 4 |
| 10000 | x | + | 517500 | + | 10000 | x | + | 10000 | ÷ | ( | x | + | 115 4 | ) | × | x | ( | x | + | 207 4 | ) | = | 150 | x | x | + | 15525 2 | x |
| 20000 | x | + | 517500 | + | 10000 | ÷ | ( | x | + | 115 4 | ) | × | x | ( | x | + | 207 4 | ) | = | 150 | x | x | + | 15525 2 | x |
| 方程两边同时乘以: | ( | x | + | 115 4 | ) |
| 20000 | x | ( | x | + | 115 4 | ) | + | 517500 | ( | x | + | 115 4 | ) | + | 10000 | x | ( | x | + | 207 4 | ) | = | 150 | x | x | ( | x | + | 115 4 | ) | + | 15525 2 | x | ( | x | + | 115 4 | ) |
| 20000 | x | x | + | 20000 | x | × | 115 4 | + | 517500 | ( | x | + | 115 4 | ) | + | 10000 | x | ( | x | + | 207 4 | ) | = | 150 | x | x | ( | x | + | 115 4 | ) | + | 15525 2 | x | ( | x | + | 115 4 | ) |
| 20000 | x | x | + | 20000 | x | × | 115 4 | + | 517500 | ( | x | + | 115 4 | ) | + | 10000 | x | ( | x | + | 207 4 | ) | = | 150 | x | x | x | + | 150 | x | x | × | 115 4 | + | 15525 2 | x | ( | x | + | 115 4 | ) |
| 20000 | x | x | + | 575000 | x | + | 517500 | ( | x | + | 115 4 | ) | + | 10000 | x | ( | x | + | 207 4 | ) | = | 150 | x | x | x | + | 8625 2 | x | x | + | 15525 2 | x | ( | x | + | 115 4 | ) |
| 20000 | x | x | + | 575000 | x | + | 517500 | x | + | 517500 | × | 115 4 | + | 10000 | x | ( | x | + | 207 4 | ) | = | 150 | x | x | x | + | 8625 2 | x | x | + | 15525 2 | x | ( | x | + | 115 4 | ) |
| 20000 | x | x | + | 575000 | x | + | 517500 | x | + | 517500 | × | 115 4 | + | 10000 | x | ( | x | + | 207 4 | ) | = | 150 | x | x | x | + | 8625 2 | x | x | + | 15525 2 | x | x | + | 15525 2 | x |
| 20000 | x | x | + | 575000 | x | + | 517500 | x | + | 14878125 | + | 10000 | x | ( | x | + | 207 4 | ) | = | 150 | x | x | x | + | 8625 2 | x | x | + | 15525 2 | x | x | + | 1785375 8 | x |
| 20000 | x | x | + | 1092500 | x | + | 14878125 | + | 10000 | x | ( | x | + | 207 4 | ) | = | 150 | x | x | x | + | 8625 2 | x | x | + | 15525 2 | x | x | + | 1785375 8 | x |
| 20000 | x | x | + | 1092500 | x | + | 14878125 | + | 10000 | x | x | + | 10000 | x | × | 207 4 | = | 150 | x | x | x | + | 8625 2 | x | x | + | 15525 2 | x | x | + | 1785375 8 | x |
| 20000 | x | x | + | 1092500 | x | + | 14878125 | + | 10000 | x | x | + | 517500 | x | = | 150 | x | x | x | + | 8625 2 | x | x | + | 15525 2 | x | x | + | 1785375 8 | x |
| 20000 | x | x | + | 1610000 | x | + | 14878125 | + | 10000 | x | x | = | 150 | x | x | x | + | 8625 2 | x | x | + | 15525 2 | x | x | + | 1785375 8 | x |