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378=-6+6(8-7k)
We move all terms to the left:
378-(-6+6(8-7k))=0
We add all the numbers together, and all the variables
-(-6+6(-7k+8))+378=0
We calculate terms in parentheses: -(-6+6(-7k+8)), so:We get rid of parentheses
-6+6(-7k+8)
determiningTheFunctionDomain 6(-7k+8)-6
We multiply parentheses
-42k+48-6
We add all the numbers together, and all the variables
-42k+42
Back to the equation:
-(-42k+42)
42k-42+378=0
We add all the numbers together, and all the variables
42k+336=0
We move all terms containing k to the left, all other terms to the right
42k=-336
k=-336/42
k=-8
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