f(x)=[x-3]

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Solution for f(x)=[x-3] equation: 


Simplifying
f(x) = [x + -3]

Multiply f * x
fx = [x + -3]

Reorder the terms:
fx = [-3 + x]

Remove brackets around [-3 + x]
fx = -3 + x

Solving
fx = -3 + x

Solving for variable 'f'.

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

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

Simplifying
f = -3x-1 + 1

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

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