Ответ:
1. 3a+3
2. 5a-10
3. 3a-9
4. 4-4a
5. 10a-50
6.21-7a
7.-5a+5
8. -10+5a
9. - 6-3a
10.2a+4
11.-a+5
12. 0
13. - 3+6a
14.-12a+24
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Answers & Comments
Ответ:
1. 3a+3
2. 5a-10
3. 3a-9
4. 4-4a
5. 10a-50
6.21-7a
7.-5a+5
8. -10+5a
9. - 6-3a
10.2a+4
11.-a+5
12. 0
13. - 3+6a
14.-12a+24