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Simplifying (x + 100)(X + -21) = 0 Reorder the terms: (100 + x)(X + -21) = 0 Reorder the terms: (100 + x)(-21 + X) = 0 Multiply (100 + x) * (-21 + X) (100(-21 + X) + x(-21 + X)) = 0 ((-21 * 100 + X * 100) + x(-21 + X)) = 0 ((-2100 + 100X) + x(-21 + X)) = 0 (-2100 + 100X + (-21 * x + X * x)) = 0 (-2100 + 100X + (-21x + xX)) = 0 (-2100 + 100X + -21x + xX) = 0 Solving -2100 + 100X + -21x + xX = 0 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '2100' to each side of the equation. -2100 + 100X + -21x + 2100 + xX = 0 + 2100 Reorder the terms: -2100 + 2100 + 100X + -21x + xX = 0 + 2100 Combine like terms: -2100 + 2100 = 0 0 + 100X + -21x + xX = 0 + 2100 100X + -21x + xX = 0 + 2100 Combine like terms: 0 + 2100 = 2100 100X + -21x + xX = 2100 Add '21x' to each side of the equation. 100X + -21x + 21x + xX = 2100 + 21x Combine like terms: -21x + 21x = 0 100X + 0 + xX = 2100 + 21x 100X + xX = 2100 + 21x Reorder the terms: -2100 + 100X + -21x + xX = 2100 + 21x + -2100 + -21x Reorder the terms: -2100 + 100X + -21x + xX = 2100 + -2100 + 21x + -21x Combine like terms: 2100 + -2100 = 0 -2100 + 100X + -21x + xX = 0 + 21x + -21x -2100 + 100X + -21x + xX = 21x + -21x Combine like terms: 21x + -21x = 0 -2100 + 100X + -21x + xX = 0 The solution to this equation could not be determined.
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