| ( | 429193 1000 | − | 427293 1000 | ) | ( | y | − | 600 | ) | ÷ | ( | 66779 100 | − | 600 | ) | + | 427293 1000 | = | 0 |
| 方程两边同时乘以: | ( | 66779 100 | − | 600 | ) |
| ( | 429193 1000 | − | 427293 1000 | ) | ( | y | − | 600 | ) | + | 427293 1000 | ( | 66779 100 | − | 600 | ) | = | 0 |
429193 1000 | ( | y | − | 600 | ) | − | 427293 1000 | ( | y | − | 600 | ) | + | 427293 1000 | ( | 66779 100 | − | 600 | ) | = | 0 |
429193 1000 | y | − | 429193 1000 | × | 600 | − | 427293 1000 | ( | y | − | 600 | ) | + | 427293 1000 | ( | 66779 100 | − | 600 | ) | = | 0 |
429193 1000 | y | − | 1287579 5 | − | 427293 1000 | ( | y | − | 600 | ) | + | 427293 1000 | ( | 66779 100 | − | 600 | ) | = | 0 |
429193 1000 | y | − | 1287579 5 | − | 427293 1000 | y | + | 427293 1000 | × | 600 | + | 427293 1000 | ( | 66779 100 | − | 600 | ) | = | 0 |
429193 1000 | y | − | 1287579 5 | − | 427293 1000 | y | + | 1281879 5 | + | 427293 1000 | ( | 66779 100 | − | 600 | ) | = | 0 |
19 10 | y | − | 1140 | + | 427293 1000 | ( | 66779 100 | − | 600 | ) | = | 0 |
19 10 | y | − | 1140 | + | 427293 1000 | × | 66779 100 | − | 427293 1000 | × | 600 | = | 0 |