-15=-6-9k

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Solution for -15=-6-9k equation:



-15=-6-9k
We move all terms to the left:
-15-(-6-9k)=0
We add all the numbers together, and all the variables
-(-9k-6)-15=0
We get rid of parentheses
9k+6-15=0
We add all the numbers together, and all the variables
9k-9=0
We move all terms containing k to the left, all other terms to the right
9k=9
k=9/9
k=1

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