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Simplifying (X + 7)(x + 7) = 9 Reorder the terms: (7 + X)(x + 7) = 9 Reorder the terms: (7 + X)(7 + x) = 9 Multiply (7 + X) * (7 + x) (7(7 + x) + X(7 + x)) = 9 ((7 * 7 + x * 7) + X(7 + x)) = 9 ((49 + 7x) + X(7 + x)) = 9 (49 + 7x + (7 * X + x * X)) = 9 (49 + 7x + (7X + xX)) = 9 Reorder the terms: (49 + 7X + 7x + xX) = 9 (49 + 7X + 7x + xX) = 9 Solving 49 + 7X + 7x + xX = 9 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-49' to each side of the equation. 49 + 7X + 7x + -49 + xX = 9 + -49 Reorder the terms: 49 + -49 + 7X + 7x + xX = 9 + -49 Combine like terms: 49 + -49 = 0 0 + 7X + 7x + xX = 9 + -49 7X + 7x + xX = 9 + -49 Combine like terms: 9 + -49 = -40 7X + 7x + xX = -40 Add '-7x' to each side of the equation. 7X + 7x + -7x + xX = -40 + -7x Combine like terms: 7x + -7x = 0 7X + 0 + xX = -40 + -7x 7X + xX = -40 + -7x Reorder the terms: 40 + 7X + 7x + xX = -40 + -7x + 40 + 7x Reorder the terms: 40 + 7X + 7x + xX = -40 + 40 + -7x + 7x Combine like terms: -40 + 40 = 0 40 + 7X + 7x + xX = 0 + -7x + 7x 40 + 7X + 7x + xX = -7x + 7x Combine like terms: -7x + 7x = 0 40 + 7X + 7x + xX = 0 The solution to this equation could not be determined.
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