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(9-3k)=3
We move all terms to the left:
(9-3k)-(3)=0
We add all the numbers together, and all the variables
(-3k+9)-3=0
We get rid of parentheses
-3k+9-3=0
We add all the numbers together, and all the variables
-3k+6=0
We move all terms containing k to the left, all other terms to the right
-3k=-6
k=-6/-3
k=+2
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