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Simplifying (X + 21)(x + -1) = 48 Reorder the terms: (21 + X)(x + -1) = 48 Reorder the terms: (21 + X)(-1 + x) = 48 Multiply (21 + X) * (-1 + x) (21(-1 + x) + X(-1 + x)) = 48 ((-1 * 21 + x * 21) + X(-1 + x)) = 48 ((-21 + 21x) + X(-1 + x)) = 48 (-21 + 21x + (-1 * X + x * X)) = 48 (-21 + 21x + (-1X + xX)) = 48 Reorder the terms: (-21 + -1X + 21x + xX) = 48 (-21 + -1X + 21x + xX) = 48 Solving -21 + -1X + 21x + xX = 48 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '21' to each side of the equation. -21 + -1X + 21x + 21 + xX = 48 + 21 Reorder the terms: -21 + 21 + -1X + 21x + xX = 48 + 21 Combine like terms: -21 + 21 = 0 0 + -1X + 21x + xX = 48 + 21 -1X + 21x + xX = 48 + 21 Combine like terms: 48 + 21 = 69 -1X + 21x + xX = 69 Add '-21x' to each side of the equation. -1X + 21x + -21x + xX = 69 + -21x Combine like terms: 21x + -21x = 0 -1X + 0 + xX = 69 + -21x -1X + xX = 69 + -21x Reorder the terms: -69 + -1X + 21x + xX = 69 + -21x + -69 + 21x Reorder the terms: -69 + -1X + 21x + xX = 69 + -69 + -21x + 21x Combine like terms: 69 + -69 = 0 -69 + -1X + 21x + xX = 0 + -21x + 21x -69 + -1X + 21x + xX = -21x + 21x Combine like terms: -21x + 21x = 0 -69 + -1X + 21x + xX = 0 The solution to this equation could not be determined.
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