f[x]=3x-12

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Solution for f[x]=3x-12 equation: 


Simplifying
f[x] = 3x + -12

Multiply f * x
fx = 3x + -12

Reorder the terms:
fx = -12 + 3x

Solving
fx = -12 + 3x

Solving for variable 'f'.

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

Divide each side by 'x'.
f = -12x-1 + 3

Simplifying
f = -12x-1 + 3

Reorder the terms:
f = 3 + -12x-1

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