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Simplifying f(x) + 4 = 0 Multiply f * x fx + 4 = 0 Reorder the terms: 4 + fx = 0 Solving 4 + fx = 0 Solving for variable 'f'. Move all terms containing f to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + fx = 0 + -4 Combine like terms: 4 + -4 = 0 0 + fx = 0 + -4 fx = 0 + -4 Combine like terms: 0 + -4 = -4 fx = -4 Divide each side by 'x'. f = -4x-1 Simplifying f = -4x-1
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