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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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