i)4x+5x+7+x+2

2)2n+3-5n+6

10x+9

3) -9Ь + 2п - 4 + 2Ь

4)-7g+3-8-3g+7h

5)-8+2d-7-5d+12

6)5Ь+7-ЗЬ-4

Помогите, если не сложно ;)​
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