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-2(k+2)=-12
We move all terms to the left:
-2(k+2)-(-12)=0
We add all the numbers together, and all the variables
-2(k+2)+12=0
We multiply parentheses
-2k-4+12=0
We add all the numbers together, and all the variables
-2k+8=0
We move all terms containing k to the left, all other terms to the right
-2k=-8
k=-8/-2
k=+4
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