9k-2k=21

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Solution for 9k-2k=21 equation: 


Simplifying
9k + -2k = 21

Combine like terms: 9k + -2k = 7k
7k = 21

Solving
7k = 21

Solving for variable 'k'.

Move all terms containing k to the left, all other terms to the right.

Divide each side by '7'.
k = 3

Simplifying
k = 3

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