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Simplifying (X + 21)(x + 21) = 21 Reorder the terms: (21 + X)(x + 21) = 21 Reorder the terms: (21 + X)(21 + x) = 21 Multiply (21 + X) * (21 + x) (21(21 + x) + X(21 + x)) = 21 ((21 * 21 + x * 21) + X(21 + x)) = 21 ((441 + 21x) + X(21 + x)) = 21 (441 + 21x + (21 * X + x * X)) = 21 (441 + 21x + (21X + xX)) = 21 Reorder the terms: (441 + 21X + 21x + xX) = 21 (441 + 21X + 21x + xX) = 21 Solving 441 + 21X + 21x + xX = 21 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-441' to each side of the equation. 441 + 21X + 21x + -441 + xX = 21 + -441 Reorder the terms: 441 + -441 + 21X + 21x + xX = 21 + -441 Combine like terms: 441 + -441 = 0 0 + 21X + 21x + xX = 21 + -441 21X + 21x + xX = 21 + -441 Combine like terms: 21 + -441 = -420 21X + 21x + xX = -420 Add '-21x' to each side of the equation. 21X + 21x + -21x + xX = -420 + -21x Combine like terms: 21x + -21x = 0 21X + 0 + xX = -420 + -21x 21X + xX = -420 + -21x Reorder the terms: 420 + 21X + 21x + xX = -420 + -21x + 420 + 21x Reorder the terms: 420 + 21X + 21x + xX = -420 + 420 + -21x + 21x Combine like terms: -420 + 420 = 0 420 + 21X + 21x + xX = 0 + -21x + 21x 420 + 21X + 21x + xX = -21x + 21x Combine like terms: -21x + 21x = 0 420 + 21X + 21x + xX = 0 The solution to this equation could not be determined.
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