2k-5 + 3k-6 + k+2 = 6k - 9
6k-9/3 = 2k - 3
Odp: 2k - 3
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2k-5 + 3k-6 + k+2 = 6k - 9
6k-9/3 = 2k - 3
Odp: 2k - 3