500 | ( | 1 | + | m% | ) | × | 1000 | ( | 1 | + | m | ÷ | 2 100 | ) | = | 660000 |
方程左边 = | 500000 | ( | 1 | + | m% | ) | ( | 1 | + | m | ÷ | 2 100 | ) |
500000 | ( | 1 | + | m% | ) | ( | 1 | + | m | ÷ | 2 100 | ) | = | 660000 |
方程左边 = | 500000 | × | 1 | ( | 1 | + | m | ÷ | 2 100 | ) | + | 500000 | × | m% | ( | 1 | + | m | ÷ | 2 100 | ) |
= | 500000 | ( | 1 | + | m | ÷ | 2 100 | ) | + | 5000 | m | ( | 1 | + | m | ÷ | 2 100 | ) |
= | 500000 | × | 1 | + | 500000 | m | ÷ | 2 100 | + | 5000 | m | ( | 1 | + | m | ÷ | 2 100 | ) |
= | 500000 | + | 25000000 | m | + | 5000 | m | ( | 1 | + | m | ÷ | 2 100 | ) |
= | 500000 | + | 25000000 | m | + | 5000 | m | × | 1 | + | 5000 | m | m | ÷ | 2 100 |
= | 500000 | + | 25000000 | m | + | 5000 | m | + | 250000 | m | m |
= | 500000 | + | 25005000 | m | + | 250000 | m | m |
500000 | + | 25005000 | m | + | 250000 | m | m | = | 660000 |