8k=5k-21

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Solution for 8k=5k-21 equation: 


Simplifying
8k = 5k + -21

Reorder the terms:
8k = -21 + 5k

Solving
8k = -21 + 5k

Solving for variable 'k'.

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

Add '-5k' to each side of the equation.
8k + -5k = -21 + 5k + -5k

Combine like terms: 8k + -5k = 3k
3k = -21 + 5k + -5k

Combine like terms: 5k + -5k = 0
3k = -21 + 0
3k = -21

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

Simplifying
k = -7

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