Solve for k k/2+9=30

Math
k2+9=30
Move all terms not containing k to the right side of the equation.
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Subtract 9 from both sides of the equation.
k2=30-9
Subtract 9 from 30.
k2=21
k2=21
Multiply both sides of the equation by 2.
2⋅k2=2⋅21
Simplify both sides of the equation.
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Cancel the common factor of 2.
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Cancel the common factor.
2⋅k2=2⋅21
Rewrite the expression.
k=2⋅21
k=2⋅21
Multiply 2 by 21.
k=42
k=42
Solve for k k/2+9=30

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