f(4)=4-12

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Solution for f(4)=4-12 equation:


Simplifying
f(4) = 4 + -12

Reorder the terms for easier multiplication:
4f = 4 + -12

Combine like terms: 4 + -12 = -8
4f = -8

Solving
4f = -8

Solving for variable 'f'.

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

Divide each side by '4'.
f = -2

Simplifying
f = -2

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