( | 144197081 50 | + | ( | 144197081 50 | × | 9 100 | + | x | × | 9 100 | ) | ) | × | 3 5 | + | x | = | 3000000 |
方程左边 = | 144197081 50 | × | 3 5 | + | ( | 144197081 50 | × | 9 100 | + | x | × | 9 100 | ) | × | 3 5 | + | x |
= | 432591243 250 | + | ( | 144197081 50 | × | 9 100 | + | x | × | 9 100 | ) | × | 3 5 | + | x |
= | 432591243 250 | + | 144197081 50 | × | 9 100 | × | 3 5 | + | x | × | 9 100 | × | 3 5 | + | x |
= | 432591243 250 | + | 3893321187 25000 | + | x | × | 27 500 | + | x |