7-8k=-21

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Solution for 7-8k=-21 equation:



7-8k=-21
We move all terms to the left:
7-8k-(-21)=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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