| ( | 1939 50 | × | 3 10 | ÷ | ( | 4083 100 | + | x | ) | + | 7 20 | x | ÷ | ( | 4083 100 | + | x | ) | ) | ( | 4083 100 | + | x | ) | ÷ | 1237 50 | = | 21 25 |
1939 50 | × | 3 10 | ÷ | ( | 4083 100 | + | x | ) | × | ( | 4083 100 | + | x | ) | ÷ | 1237 50 | + | 7 20 | x | ÷ | ( | 4083 100 | + | x | ) | × | ( | 4083 100 | + | x | ) | ÷ | 1237 50 | = | 21 25 |
5817 12370 | ÷ | ( | 4083 100 | + | x | ) | × | ( | 4083 100 | + | x | ) | + | 35 2474 | x | ÷ | ( | 4083 100 | + | x | ) | × | ( | 4083 100 | + | x | ) | = | 21 25 |
| 方程两边同时乘以: | ( | 4083 100 | + | x | ) |
5817 12370 | ( | 4083 100 | + | x | ) | + | 35 2474 | x | ( | 4083 100 | + | x | ) | = | 21 25 | ( | 4083 100 | + | x | ) |
5817 12370 | × | 4083 100 | + | 5817 12370 | x | + | 35 2474 | x | ( | 4083 100 | + | x | ) | = | 21 25 | ( | 4083 100 | + | x | ) |
5817 12370 | × | 4083 100 | + | 5817 12370 | x | + | 35 2474 | x | ( | 4083 100 | + | x | ) | = | 21 25 | × | 4083 100 | + | 21 25 | x |
23750811 1237000 | + | 5817 12370 | x | + | 35 2474 | x | ( | 4083 100 | + | x | ) | = | 85743 2500 | + | 21 25 | x |
23750811 1237000 | + | 5817 12370 | x | + | 35 2474 | x | × | 4083 100 | + | 35 2474 | x | x | = | 85743 2500 | + | 21 25 | x |
23750811 1237000 | + | 5817 12370 | x | + | 28581 49480 | x | + | 35 2474 | x | x | = | 85743 2500 | + | 21 25 | x |
23750811 1237000 | + | 51849 49480 | x | + | 35 2474 | x | x | = | 85743 2500 | + | 21 25 | x |
| x= | 3267 125 |