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-7=2+4K
We move all terms to the left:
-7-(2+4K)=0
We add all the numbers together, and all the variables
-(4K+2)-7=0
We get rid of parentheses
-4K-2-7=0
We add all the numbers together, and all the variables
-4K-9=0
We move all terms containing K to the left, all other terms to the right
-4K=9
K=9/-4
K=-2+1/4
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