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4(k+3)-2(k-3)=38
We move all terms to the left:
4(k+3)-2(k-3)-(38)=0
We multiply parentheses
4k-2k+12+6-38=0
We add all the numbers together, and all the variables
2k-20=0
We move all terms containing k to the left, all other terms to the right
2k=20
k=20/2
k=10
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