2. Упростите выражение:

а) 8 + 7k - 3k + k - 11k

б) 4(c - 1) - 7(c+5) - 2(3c + 8)

в) 3n - 8n - 5n + 2 + 2n

г) -3(a - 2) + 6(a - 4) - 4(3a + 2

 

 

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