31776 5 | y | × | 1 5 | + | 3177601 100 | ( | 1 | − | y | ) | × | 7 2 | = | 11121603 100 |
方程左边 = | 31776 25 | y | + | 22243207 200 | ( | 1 | − | y | ) |
31776 25 | y | + | 22243207 200 | ( | 1 | − | y | ) | = | 11121603 100 |
方程左边 = | 31776 25 | y | + | 22243207 200 | × | 1 | − | 22243207 200 | y |
= | 31776 25 | y | + | 22243207 200 | − | 22243207 200 | y |
= | - | 21988999 200 | y | + | 22243207 200 |
- | 21988999 200 | y | + | 22243207 200 | = | 11121603 100 |
- | 21988999 200 | y | = | 11121603 100 | − | 22243207 200 |
- | 21988999 200 | y | = | - | 1 200 |
1 200 | = | 21988999 200 | y |
21988999 200 | y | = | 1 200 |
y | = | 1 200 | ÷ | 21988999 200 |
= | 1 200 | × | 200 21988999 |
= | 1 | × | 1 21988999 |
y | = | 1 21988999 |
y | = | 0 |