2k-5k=-21

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Solution for 2k-5k=-21 equation: 


Simplifying
2k + -5k = -21

Combine like terms: 2k + -5k = -3k
-3k = -21

Solving
-3k = -21

Solving for variable 'k'.

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

Divide each side by '-3'.
k = 7

Simplifying
k = 7

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