101 100 | × | 30 | + | ( | 2500 | + | 47 25 | × | 30 | ) | x | = | 81 |
方程左边 = | 303 10 | + | ( | 2500 | + | 47 25 | × | 30 | ) | x |
303 10 | + | ( | 2500 | + | 47 25 | × | 30 | ) | x | = | 81 |
方程左边 = | 303 10 | + | 2500 | x | + | 47 25 | × | 30 | x |
= | 303 10 | + | 2500 | x | + | 282 5 | x |
= | 303 10 | + | 12782 5 | x |
303 10 | + | 12782 5 | x | = | 81 |
12782 5 | x | = | 81 | − | 303 10 |
12782 5 | x | = | 507 10 |
x | = | 507 10 | ÷ | 12782 5 |
= | 507 10 | × | 5 12782 |
= | 507 2 | × | 1 12782 |
x | = | 507 25564 |
x | = | 0.019833 |