ПОМОГИТЕ ПЖПЖП ДАЮ 30 БАЛЛОВ
1) 15а – 6а+ 2а – 10а

2) x + 6,7х - 6,9х - x

3) - 18n - 12n + 7,3n + 6,5n

4) 12+5а - 9,2m + 7а + 15

5) 4х – 2а + 6х – 3а + 4а

6) а + с - а + с

7) 5m - (3m +5) + (2m - 4)

9) 7х - (2х - 3) + (-3х - 2)

10) (6х - 11) - (4 - 6х)

11) 9 - (2х + 8) - (5х + 2)

12) (6х - 5) - (0,2х - 2)
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