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7+2(k+3)=16
We move all terms to the left:
7+2(k+3)-(16)=0
We add all the numbers together, and all the variables
2(k+3)-9=0
We multiply parentheses
2k+6-9=0
We add all the numbers together, and all the variables
2k-3=0
We move all terms containing k to the left, all other terms to the right
2k=3
k=3/2
k=1+1/2
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