Solve for k
k>-4
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-3k-12<0
Combine k and -4k to get -3k.
-3k<12
Add 12 to both sides. Anything plus zero gives itself.
k>\frac{12}{-3}
Divide both sides by -3. Since -3 is negative, the inequality direction is changed.
k>-4
Divide 12 by -3 to get -4.
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