1 | ÷ | m | + | 1 | ÷ | ( | m | + | 1 | ) | + | 1 | ÷ | ( | m | + | 2 | ) | + | 1 | ÷ | ( | m | + | 3 | ) | = | 19 | ÷ | 20 |
方程两边同时乘以: | m |
1 | + | 1 | ÷ | ( | m | + | 1 | ) | × | m | + | 1 | ÷ | ( | m | + | 2 | ) | × | m | + | 1 | ÷ | ( | m | + | 3 | ) | × | m | = | 19 | ÷ | 20 | × | m |
方程两边同时乘以: | ( | m | + | 1 | ) |
1 | ( | m | + | 1 | ) | + | 1 | m | + | 1 | ÷ | ( | m | + | 2 | ) | × | m | ( | m | + | 1 | ) | + | 1 | ÷ | ( | m | + | 3 | ) | × | m | ( | m | + | 1 | ) | = | 19 | ÷ | 20 | × | m | ( | m | + | 1 | ) |
1 | m | + | 1 | × | 1 | + | 1 | m | + | 1 | ÷ | ( | m | + | 2 | ) | × | m | ( | m | + | 1 | ) | + | 1 | ÷ | ( | m | + | 3 | ) | = | 19 | ÷ | 20 | × | m | ( | m | + | 1 | ) |
1 | m | + | 1 | × | 1 | + | 1 | m | + | 1 | ÷ | ( | m | + | 2 | ) | × | m | ( | m | + | 1 | ) | + | 1 | ÷ | ( | m | + | 3 | ) | = | 19 | ÷ | 20 | × | m | m | + | 19 | ÷ | 20 | × | m | × | 1 |
1 | m | + | 1 | + | 1 | m | + | 1 | ÷ | ( | m | + | 2 | ) | × | m | ( | m | + | 1 | ) | + | 1 | ÷ | ( | m | + | 3 | ) | × | m | = | 19 20 | m | m | + | 19 20 | m |
2 | m | + | 1 | + | 1 | ÷ | ( | m | + | 2 | ) | × | m | ( | m | + | 1 | ) | + | 1 | ÷ | ( | m | + | 3 | ) | × | m | ( | m | + | 1 | ) | = | 19 20 | m | m | + | 19 20 | m |
方程两边同时乘以: | ( | m | + | 2 | ) |
2 | m | ( | m | + | 2 | ) | + | 1 | ( | m | + | 2 | ) | + | 1 | m | ( | m | + | 1 | ) | + | 1 | ÷ | ( | m | + | 3 | ) | × | m | ( | m | + | 1 | ) | = | 19 20 | m | m | ( | m | + | 2 | ) | + | 19 20 | m | ( | m | + | 2 | ) |
2 | m | m | + | 2 | m | × | 2 | + | 1 | ( | m | + | 2 | ) | + | 1 | m | ( | m | + | 1 | ) | + | 1 | = | 19 20 | m | m | ( | m | + | 2 | ) | + | 19 20 | m | ( | m | + | 2 | ) |
2 | m | m | + | 2 | m | × | 2 | + | 1 | ( | m | + | 2 | ) | + | 1 | m | ( | m | + | 1 | ) | + | 1 | = | 19 20 | m | m | m | + | 19 20 | m | m | × | 2 | + | 19 20 | m | ( | m | + | 2 | ) |
2 | m | m | + | 4 | m | + | 1 | ( | m | + | 2 | ) | + | 1 | m | ( | m | + | 1 | ) | + | 1 | ÷ | ( | m | + | 3 | ) | = | 19 20 | m | m | m | + | 19 10 | m | m | + | 19 20 | m | ( | m | + | 2 | ) |
方程两边同时乘以: | ( | m | + | 3 | ) |
2 | m | m | ( | m | + | 3 | ) | + | 4 | m | ( | m | + | 3 | ) | + | 1 | ( | m | + | 2 | ) | ( | m | + | 3 | ) | + | 1 | m | = | 19 20 | m | m | m | ( | m | + | 3 | ) | + | 19 10 | m | m | ( | m | + | 3 | ) | + | 19 20 | m | ( | m | + | 2 | ) |
2 | m | m | m | + | 2 | m | m | × | 3 | + | 4 | m | ( | m | + | 3 | ) | + | 1 | = | 19 20 | m | m | m | ( | m | + | 3 | ) | + | 19 10 | m | m | ( | m | + | 3 | ) | + | 19 20 | m | ( | m | + | 2 | ) |
2 | m | m | m | + | 2 | m | m | × | 3 | + | 4 | m | ( | m | + | 3 | ) | + | 1 | = | 19 20 | m | m | m | m | + | 19 20 | m | m | m | × | 3 | + | 19 10 | m |
2 | m | m | m | + | 6 | m | m | + | 4 | m | ( | m | + | 3 | ) | + | 1 | ( | m | + | 2 | ) | = | 19 20 | m | m | m | m | + | 57 20 | m | m | m | + | 19 10 | m | m |
2 | m | m | m | + | 6 | m | m | + | 4 | m | m | + | 4 | m | = | 19 20 | m | m | m | m | + | 57 20 | m | m | m | + | 19 10 | m | m |
2 | m | m | m | + | 6 | m | m | + | 4 | m | m | + | 4 | m | = | 19 20 | m | m | m | m | + | 57 20 | m | m | m | + | 19 10 | m | m |
2 | m | m | m | + | 6 | m | m | + | 4 | m | m | + | 12 | m | = | 19 20 | m | m | m | m | + | 57 20 | m | m | m | + | 19 10 | m | m |
2 | m | m | m | + | 6 | m | m | + | 4 | m | m | + | 12 | m | = | 19 20 | m | m | m | m | + | 57 20 | m | m | m | + | 19 10 | m | m |
2 | m | m | m | + | 6 | m | m | + | 4 | m | m | + | 12 | m | = | 19 20 | m | m | m | m | + | 57 20 | m | m | m | + | 19 10 | m | m |
2 | m | m | m | + | 6 | m | m | + | 4 | m | m | + | 12 | m | = | 19 20 | m | m | m | m | + | 57 20 | m | m | m | + | 19 10 | m | m |
2 | m | m | m | + | 6 | m | m | + | 4 | m | m | + | 12 | m | = | 19 20 | m | m | m | m | + | 57 20 | m | m | m | + | 19 10 | m | m |
2 | m | m | m | + | 6 | m | m | + | 4 | m | m | + | 12 | m | = | 19 20 | m | m | m | m | + | 57 20 | m | m | m | + | 19 10 | m | m |
m1=3 |