fn=7-2n-1

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Solution for fn=7-2n-1 equation: 


Simplifying
fn = 7 + -2n + -1

Reorder the terms:
fn = 7 + -1 + -2n

Combine like terms: 7 + -1 = 6
fn = 6 + -2n

Solving
fn = 6 + -2n

Solving for variable 'f'.

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

Divide each side by 'n'.
f = 6n-1 + -2

Simplifying
f = 6n-1 + -2

Reorder the terms:
f = -2 + 6n-1

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