( | 398 | × | 17 10 | + | 1200 | ) | × | 11 5 | × | 20 | ÷ | 13 10 | × | 37 20 | x | = | 450000 |
方程左边 = | ( | 398 | × | 17 10 | + | 1200 | ) | × | 814 13 | x |
( | 398 | × | 17 10 | + | 1200 | ) | × | 814 13 | x | = | 450000 |
方程左边 = | 398 | × | 17 10 | × | 814 13 | x | + | 1200 | × | 814 13 | x |
= | 2753762 65 | x | + | 976800 13 | x |
= | 7637762 65 | x |
7637762 65 | x | = | 450000 |
x | = | 450000 | ÷ | 7637762 65 |
= | 450000 | × | 65 7637762 |
= | 225000 | × | 65 3818881 |
x | = | 14625000 3818881 |
x | = | 3.829656 |