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-7(6+k)=-9
We move all terms to the left:
-7(6+k)-(-9)=0
We add all the numbers together, and all the variables
-7(k+6)-(-9)=0
We add all the numbers together, and all the variables
-7(k+6)+9=0
We multiply parentheses
-7k-42+9=0
We add all the numbers together, and all the variables
-7k-33=0
We move all terms containing k to the left, all other terms to the right
-7k=33
k=33/-7
k=-4+5/7
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