f(n)=2n-4

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Solution for f(n)=2n-4 equation: 


Simplifying
f(n) = 2n + -4

Multiply f * n
fn = 2n + -4

Reorder the terms:
fn = -4 + 2n

Solving
fn = -4 + 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 = -4n-1 + 2

Simplifying
f = -4n-1 + 2

Reorder the terms:
f = 2 + -4n-1

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