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5k-(7+k)=-(9k+7)
We move all terms to the left:
5k-(7+k)-(-(9k+7))=0
We add all the numbers together, and all the variables
5k-(k+7)-(-(9k+7))=0
We get rid of parentheses
5k-k-(-(9k+7))-7=0
We calculate terms in parentheses: -(-(9k+7)), so:We add all the numbers together, and all the variables
-(9k+7)
We get rid of parentheses
-9k-7
Back to the equation:
-(-9k-7)
4k-(-9k-7)-7=0
We get rid of parentheses
4k+9k+7-7=0
We add all the numbers together, and all the variables
13k=0
k=0/13
k=0
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