Isolate variable term: Isolate the variable term in −1−1k<−4. Add 1 to both sides of the inequality to move the constant term to the right side. −1−1k+1<−4+1−1k<−3
Add 1 to both sides: Now, we have −1k<−3. Divide both sides by −1 to solve for k. Remember that dividing by a negative number reverses the inequality sign. −1−1k>−1−3 k>3
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