Раскройте скобки. 7 класс.

1)x+(y-z)

2)a-(c+x)

3)m-(n-p)

4)a-(-b-d)

5)a+(b-c+d)

6)a-(b-c-d)

7)a-(b+c+d)

8)a+(b+c-d)

 

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