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-11+8k=-(k-7)
We move all terms to the left:
-11+8k-(-(k-7))=0
We calculate terms in parentheses: -(-(k-7)), so:We get rid of parentheses
-(k-7)
We get rid of parentheses
-k+7
We add all the numbers together, and all the variables
-1k+7
Back to the equation:
-(-1k+7)
8k+1k-7-11=0
We add all the numbers together, and all the variables
9k-18=0
We move all terms containing k to the left, all other terms to the right
9k=18
k=18/9
k=2
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