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k/3-9=-2
We simplify the equation to the form, which is simple to understand
k/3-9=-2
Simplifying:
+ 0.333333333333k-9=-2
We move all terms containing k to the left and all other terms to the right.
+ 0.333333333333k=-2+9
We simplify left and right side of the equation.
+ 0.333333333333k=+7
We divide both sides of the equation by 0.333333333333 to get k.
k=21
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