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Simplifying f(x) = (9x + 11) + -1(-4x + 25) Multiply f * x fx = (9x + 11) + -1(-4x + 25) Reorder the terms: fx = (11 + 9x) + -1(-4x + 25) Remove parenthesis around (11 + 9x) fx = 11 + 9x + -1(-4x + 25) Reorder the terms: fx = 11 + 9x + -1(25 + -4x) fx = 11 + 9x + (25 * -1 + -4x * -1) fx = 11 + 9x + (-25 + 4x) Reorder the terms: fx = 11 + -25 + 9x + 4x Combine like terms: 11 + -25 = -14 fx = -14 + 9x + 4x Combine like terms: 9x + 4x = 13x fx = -14 + 13x Solving fx = -14 + 13x Solving for variable 'f'. Move all terms containing f to the left, all other terms to the right. Divide each side by 'x'. f = -14x-1 + 13 Simplifying f = -14x-1 + 13 Reorder the terms: f = 13 + -14x-1
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