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Simplifying X2 + 21 = 2x Reorder the terms: 21 + X2 = 2x Solving 21 + X2 = 2x 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 + -21 + X2 = -21 + 2x Combine like terms: 21 + -21 = 0 0 + X2 = -21 + 2x X2 = -21 + 2x Simplifying X2 = -21 + 2x Reorder the terms: 21 + X2 + -2x = -21 + 2x + 21 + -2x Reorder the terms: 21 + X2 + -2x = -21 + 21 + 2x + -2x Combine like terms: -21 + 21 = 0 21 + X2 + -2x = 0 + 2x + -2x 21 + X2 + -2x = 2x + -2x Combine like terms: 2x + -2x = 0 21 + X2 + -2x = 0 The solution to this equation could not be determined.
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