10K-3K=21

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Solution for 10K-3K=21 equation: 


Simplifying
10K + -3K = 21

Combine like terms: 10K + -3K = 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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