I'm assuming this is (3k^2 - 3k) / (2k - 2)
1. Factor out 3k from the numerator giving us: 3k(k - 1) / 2k - 2
2. Factor out 2 from the denominator giving us: 3k(k - 1) / 2(k - 1)
3. Reduce the expression by cancelling (k-1) from numerator and denominator
4. Answer: 3k/2