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Simplifying F(-1) = -1 + -1 Reorder the terms for easier multiplication: -1F = -1 + -1 Combine like terms: -1 + -1 = -2 -1F = -2 Solving -1F = -2 Solving for variable 'F'. Move all terms containing F to the left, all other terms to the right. Divide each side by '-1'. F = 2 Simplifying F = 2
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