12x−10 |
21 |
8x−9 |
14 |
2−x |
15 |
7x−9 |
20 |
化简,得
24x−20 |
42 |
24x−27 |
42 |
8−4x |
60 |
21x−27 |
60 |
即
7 |
42 |
35−25x |
60 |
∴
1 |
6 |
35−25x |
60 |
去分母,得
10=35-25x …(7分)
解得 x=1…(8分)
12x−10 |
21 |
7x−9 |
20 |
2−x |
15 |
8x−9 |
14 |
12x−10 |
21 |
8x−9 |
14 |
2−x |
15 |
7x−9 |
20 |
24x−20 |
42 |
24x−27 |
42 |
8−4x |
60 |
21x−27 |
60 |
7 |
42 |
35−25x |
60 |
1 |
6 |
35−25x |
60 |