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-2(-k-2)=10
We move all terms to the left:
-2(-k-2)-(10)=0
We add all the numbers together, and all the variables
-2(-1k-2)-10=0
We multiply parentheses
2k+4-10=0
We add all the numbers together, and all the variables
2k-6=0
We move all terms containing k to the left, all other terms to the right
2k=6
k=6/2
k=3
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