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Simplifying (X + -3)(x + 9) = 400 Reorder the terms: (-3 + X)(x + 9) = 400 Reorder the terms: (-3 + X)(9 + x) = 400 Multiply (-3 + X) * (9 + x) (-3(9 + x) + X(9 + x)) = 400 ((9 * -3 + x * -3) + X(9 + x)) = 400 ((-27 + -3x) + X(9 + x)) = 400 (-27 + -3x + (9 * X + x * X)) = 400 (-27 + -3x + (9X + xX)) = 400 Reorder the terms: (-27 + 9X + -3x + xX) = 400 (-27 + 9X + -3x + xX) = 400 Solving -27 + 9X + -3x + xX = 400 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '27' to each side of the equation. -27 + 9X + -3x + 27 + xX = 400 + 27 Reorder the terms: -27 + 27 + 9X + -3x + xX = 400 + 27 Combine like terms: -27 + 27 = 0 0 + 9X + -3x + xX = 400 + 27 9X + -3x + xX = 400 + 27 Combine like terms: 400 + 27 = 427 9X + -3x + xX = 427 Add '3x' to each side of the equation. 9X + -3x + 3x + xX = 427 + 3x Combine like terms: -3x + 3x = 0 9X + 0 + xX = 427 + 3x 9X + xX = 427 + 3x Reorder the terms: -427 + 9X + -3x + xX = 427 + 3x + -427 + -3x Reorder the terms: -427 + 9X + -3x + xX = 427 + -427 + 3x + -3x Combine like terms: 427 + -427 = 0 -427 + 9X + -3x + xX = 0 + 3x + -3x -427 + 9X + -3x + xX = 3x + -3x Combine like terms: 3x + -3x = 0 -427 + 9X + -3x + xX = 0 The solution to this equation could not be determined.
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