K+-21=42

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Solution for K+-21=42 equation: 


Simplifying
K + -21 = 42

Reorder the terms:
-21 + K = 42

Solving
-21 + K = 42

Solving for variable 'K'.

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

Add '21' to each side of the equation.
-21 + 21 + K = 42 + 21

Combine like terms: -21 + 21 = 0
0 + K = 42 + 21
K = 42 + 21

Combine like terms: 42 + 21 = 63
K = 63

Simplifying
K = 63

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