5k*0.81=20

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Solution for 5k*0.81=20 equation: 


Simplifying
5k * 0.81 = 20

Reorder the terms for easier multiplication:
5 * 0.81k = 20

Multiply 5 * 0.81
4.05k = 20

Solving
4.05k = 20

Solving for variable 'k'.

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

Divide each side by '4.05'.
k = 4.938271605

Simplifying
k = 4.938271605

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