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-(-12-12k)=-6(-3-k)
We move all terms to the left:
-(-12-12k)-(-6(-3-k))=0
We add all the numbers together, and all the variables
-(-12k-12)-(-6(-1k-3))=0
We get rid of parentheses
12k-(-6(-1k-3))+12=0
We calculate terms in parentheses: -(-6(-1k-3)), so:We get rid of parentheses
-6(-1k-3)
We multiply parentheses
6k+18
Back to the equation:
-(6k+18)
12k-6k-18+12=0
We add all the numbers together, and all the variables
6k-6=0
We move all terms containing k to the left, all other terms to the right
6k=6
k=6/6
k=1
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