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50=12k+2
We move all terms to the left:
50-(12k+2)=0
We get rid of parentheses
-12k-2+50=0
We add all the numbers together, and all the variables
-12k+48=0
We move all terms containing k to the left, all other terms to the right
-12k=-48
k=-48/-12
k=+4
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