| 7600 | ÷ | ( | x | × | 31 25 | ) | + | 7000 | ÷ | ( | x | × | 28 25 | ) | + | 10000 | ÷ | ( | x | × | 28 25 | ) | = | 150 |
| 方程两边同时乘以: | ( | x | × | 31 25 | ) |
| 7600 | + | 7000 | ÷ | ( | 1 | × | 28 25 | ) | × | ( | 1 | × | 31 25 | ) | + | 10000 | ÷ | ( | 1 | × | 28 25 | ) | × | ( | 1 | × | 31 25 | ) | = | 150 | ( | x | × | 31 25 | ) |
| 7600 | + | 7000 | ÷ | ( | 1 | × | 28 25 | ) | × | 1 | × | 31 25 | + | 10000 | ÷ | ( | 1 | × | 28 25 | ) | × | ( | 1 | × | 31 25 | ) | = | 150 | ( | x | × | 31 25 | ) |
| 7600 | + | 7000 | ÷ | ( | 1 | × | 28 25 | ) | × | 1 | × | 31 25 | + | 10000 | ÷ | ( | 1 | × | 28 25 | ) | × | ( | 1 | × | 31 25 | ) | = | 150 | x | × | 31 25 |
| 7600 | + | 8680 | ÷ | ( | 1 | × | 28 25 | ) | + | 10000 | ÷ | ( | 1 | × | 28 25 | ) | × | ( | 1 | × | 31 25 | ) | = | 186 | x |
| 方程两边同时乘以: | ( | 1 | × | 28 25 | ) |
| 7600 | ( | 1 | × | 28 25 | ) | + | 8680 | + | 10000 | ÷ | ( | 1 | × | 28 25 | ) | × | ( | 1 | × | 31 25 | ) | ( | 1 | × | 28 25 | ) | = | 186 | x | ( | 1 | × | 28 25 | ) |
| 7600 | × | 1 | × | 28 25 | + | 8680 | + | 10000 | ÷ | ( | 1 | × | 28 25 | ) | × | ( | 1 | × | 31 25 | ) | ( | 1 | × | 28 25 | ) | = | 186 | x | ( | 1 | × | 28 25 | ) |
| 7600 | × | 1 | × | 28 25 | + | 8680 | + | 10000 | ÷ | ( | 1 | × | 28 25 | ) | × | ( | 1 | × | 31 25 | ) | ( | 1 | × | 28 25 | ) | = | 186 | x | × | 1 | × | 28 25 |
| 8512 | + | 8680 | + | 10000 | ÷ | ( | 1 | × | 28 25 | ) | × | ( | 1 | × | 31 25 | ) | ( | 1 | × | 28 25 | ) | = | 5208 25 | x |
| 17192 | + | 10000 | ÷ | ( | 1 | × | 28 25 | ) | × | ( | 1 | × | 31 25 | ) | ( | 1 | × | 28 25 | ) | = | 5208 25 | x |
| 方程两边同时乘以: | ( | 1 | × | 28 25 | ) |
| 17192 | ( | 1 | × | 28 25 | ) | + | 10000 | ( | 1 | × | 31 25 | ) | ( | 1 | × | 28 25 | ) | = | 5208 25 | x | ( | 1 | × | 28 25 | ) |
| 17192 | × | 1 | × | 28 25 | + | 10000 | ( | 1 | × | 31 25 | ) | ( | 1 | × | 28 25 | ) | = | 5208 25 | x | ( | 1 | × | 28 25 | ) |
| 17192 | × | 1 | × | 28 25 | + | 10000 | ( | 1 | × | 31 25 | ) | ( | 1 | × | 28 25 | ) | = | 5208 25 | x | × | 1 | × | 28 25 |
481376 25 | + | 10000 | ( | 1 | × | 31 25 | ) | ( | 1 | × | 28 25 | ) | = | 145824 625 | x |
481376 25 | + | 10000 | × | 1 | × | 31 25 | ( | 1 | × | 28 25 | ) | = | 145824 625 | x |
481376 25 | + | 12400 | ( | 1 | × | 28 25 | ) | = | 145824 625 | x |
481376 25 | + | 12400 | × | 1 | × | 28 25 | = | 145824 625 | x |
481376 25 | + | 13888 | = | 145824 625 | x |
828576 25 | = | 145824 625 | x |
| - | 145824 625 | x | = | - | 828576 25 |
828576 25 | = | 145824 625 | x |
145824 625 | x | = | 828576 25 |
| x | = | 828576 25 | ÷ | 145824 625 |
| = | 828576 25 | × | 625 145824 |
| = | 1233 | × | 25 217 |
| x | = | 30825 217 |
| x | = | 142.050691 |