Question

1. -12 = 3 - 2k - 3k

Explanation:

Step1: Combine like - terms

Combine the terms with $k$ on the right - hand side: $-12 = 3+(-2k - 3k)=3 - 5k$.

Step2: Isolate the term with $k$

Subtract 3 from both sides: $-12-3=3 - 5k-3$. This simplifies to $-15=-5k$.

Step3: Solve for $k$

Divide both sides by - 5: $\frac{-15}{-5}=\frac{-5k}{-5}$. So, $k = 3$.

Answer:

$k = 3$