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Simplifying (X + -9)(x + -9) = 66 Reorder the terms: (-9 + X)(x + -9) = 66 Reorder the terms: (-9 + X)(-9 + x) = 66 Multiply (-9 + X) * (-9 + x) (-9(-9 + x) + X(-9 + x)) = 66 ((-9 * -9 + x * -9) + X(-9 + x)) = 66 ((81 + -9x) + X(-9 + x)) = 66 (81 + -9x + (-9 * X + x * X)) = 66 (81 + -9x + (-9X + xX)) = 66 Reorder the terms: (81 + -9X + -9x + xX) = 66 (81 + -9X + -9x + xX) = 66 Solving 81 + -9X + -9x + xX = 66 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 = 66 + -81 Reorder the terms: 81 + -81 + -9X + -9x + xX = 66 + -81 Combine like terms: 81 + -81 = 0 0 + -9X + -9x + xX = 66 + -81 -9X + -9x + xX = 66 + -81 Combine like terms: 66 + -81 = -15 -9X + -9x + xX = -15 Add '9x' to each side of the equation. -9X + -9x + 9x + xX = -15 + 9x Combine like terms: -9x + 9x = 0 -9X + 0 + xX = -15 + 9x -9X + xX = -15 + 9x Reorder the terms: 15 + -9X + -9x + xX = -15 + 9x + 15 + -9x Reorder the terms: 15 + -9X + -9x + xX = -15 + 15 + 9x + -9x Combine like terms: -15 + 15 = 0 15 + -9X + -9x + xX = 0 + 9x + -9x 15 + -9X + -9x + xX = 9x + -9x Combine like terms: 9x + -9x = 0 15 + -9X + -9x + xX = 0 The solution to this equation could not be determined.
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