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23=3k+5+3k
We move all terms to the left:
23-(3k+5+3k)=0
We add all the numbers together, and all the variables
-(6k+5)+23=0
We get rid of parentheses
-6k-5+23=0
We add all the numbers together, and all the variables
-6k+18=0
We move all terms containing k to the left, all other terms to the right
-6k=-18
k=-18/-6
k=+3
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