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Simplifying f(x) = -4x + 5x Multiply f * x fx = -4x + 5x Combine like terms: -4x + 5x = 1x fx = 1x Solving fx = 1x Solving for variable 'f'. Move all terms containing f to the left, all other terms to the right. Divide each side by 'x'. f = 1 Simplifying f = 1
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