81=fk

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Solution for 81=fk equation:


Simplifying
81 = fk

Solving
81 = fk

Solving for variable 'f'.

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

Add '-1fk' to each side of the equation.
81 + -1fk = fk + -1fk

Combine like terms: fk + -1fk = 0
81 + -1fk = 0

Add '-81' to each side of the equation.
81 + -81 + -1fk = 0 + -81

Combine like terms: 81 + -81 = 0
0 + -1fk = 0 + -81
-1fk = 0 + -81

Combine like terms: 0 + -81 = -81
-1fk = -81

Divide each side by '-1k'.
f = 81k-1

Simplifying
f = 81k-1

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