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Simplifying (X + 9)(x + 9) = 12 Reorder the terms: (9 + X)(x + 9) = 12 Reorder the terms: (9 + X)(9 + x) = 12 Multiply (9 + X) * (9 + x) (9(9 + x) + X(9 + x)) = 12 ((9 * 9 + x * 9) + X(9 + x)) = 12 ((81 + 9x) + X(9 + x)) = 12 (81 + 9x + (9 * X + x * X)) = 12 (81 + 9x + (9X + xX)) = 12 Reorder the terms: (81 + 9X + 9x + xX) = 12 (81 + 9X + 9x + xX) = 12 Solving 81 + 9X + 9x + xX = 12 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-81' to each side of the equation. 81 + 9X + 9x + -81 + xX = 12 + -81 Reorder the terms: 81 + -81 + 9X + 9x + xX = 12 + -81 Combine like terms: 81 + -81 = 0 0 + 9X + 9x + xX = 12 + -81 9X + 9x + xX = 12 + -81 Combine like terms: 12 + -81 = -69 9X + 9x + xX = -69 Add '-9x' to each side of the equation. 9X + 9x + -9x + xX = -69 + -9x Combine like terms: 9x + -9x = 0 9X + 0 + xX = -69 + -9x 9X + xX = -69 + -9x Reorder the terms: 69 + 9X + 9x + xX = -69 + -9x + 69 + 9x Reorder the terms: 69 + 9X + 9x + xX = -69 + 69 + -9x + 9x Combine like terms: -69 + 69 = 0 69 + 9X + 9x + xX = 0 + -9x + 9x 69 + 9X + 9x + xX = -9x + 9x Combine like terms: -9x + 9x = 0 69 + 9X + 9x + xX = 0 The solution to this equation could not be determined.
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