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7(4+1)-8=39+8k
We move all terms to the left:
7(4+1)-8-(39+8k)=0
We add all the numbers together, and all the variables
-(8k+39)-8+75=0
We add all the numbers together, and all the variables
-(8k+39)+67=0
We get rid of parentheses
-8k-39+67=0
We add all the numbers together, and all the variables
-8k+28=0
We move all terms containing k to the left, all other terms to the right
-8k=-28
k=-28/-8
k=3+1/2
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