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13+2k=+4(k-3)
We move all terms to the left:
13+2k-(+4(k-3))=0
We calculate terms in parentheses: -(+4(k-3)), so:We get rid of parentheses
+4(k-3)
determiningTheFunctionDomain 4(k-3)
We multiply parentheses
4k-12
Back to the equation:
-(4k-12)
2k-4k+12+13=0
We add all the numbers together, and all the variables
-2k+25=0
We move all terms containing k to the left, all other terms to the right
-2k=-25
k=-25/-2
k=12+1/2
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