f(n)=(-1)n*3

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Solution for f(n)=(-1)n*3 equation: 


Simplifying
f(n) = (-1) * n * 3

Multiply f * n
fn = (-1) * n * 3

Reorder the terms for easier multiplication:
fn = -1 * 3n

Multiply -1 * 3
fn = -3n

Solving
fn = -3n

Solving for variable 'f'.

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

Divide each side by 'n'.
f = -3

Simplifying
f = -3

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