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-15=-8k-3-4
We move all terms to the left:
-15-(-8k-3-4)=0
We add all the numbers together, and all the variables
-(-8k-7)-15=0
We get rid of parentheses
8k+7-15=0
We add all the numbers together, and all the variables
8k-8=0
We move all terms containing k to the left, all other terms to the right
8k=8
k=8/8
k=1
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