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k/2+9=30
We simplify the equation to the form, which is simple to understand
k/2+9=30
Simplifying:
+ 0.5k+9=30
We move all terms containing k to the left and all other terms to the right.
+ 0.5k=+30-9
We simplify left and right side of the equation.
+ 0.5k=+21
We divide both sides of the equation by 0.5 to get k.
k=42
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