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-19-8k=-3(2k+3)
We move all terms to the left:
-19-8k-(-3(2k+3))=0
We calculate terms in parentheses: -(-3(2k+3)), so:We get rid of parentheses
-3(2k+3)
We multiply parentheses
-6k-9
Back to the equation:
-(-6k-9)
-8k+6k+9-19=0
We add all the numbers together, and all the variables
-2k-10=0
We move all terms containing k to the left, all other terms to the right
-2k=10
k=10/-2
k=-5
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