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Simplifying X2 + -4x = 2x + -21 Reorder the terms: X2 + -4x = -21 + 2x Solving X2 + -4x = -21 + 2x Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '4x' to each side of the equation. X2 + -4x + 4x = -21 + 2x + 4x Combine like terms: -4x + 4x = 0 X2 + 0 = -21 + 2x + 4x X2 = -21 + 2x + 4x Combine like terms: 2x + 4x = 6x X2 = -21 + 6x Simplifying X2 = -21 + 6x Reorder the terms: 21 + X2 + -6x = -21 + 6x + 21 + -6x Reorder the terms: 21 + X2 + -6x = -21 + 21 + 6x + -6x Combine like terms: -21 + 21 = 0 21 + X2 + -6x = 0 + 6x + -6x 21 + X2 + -6x = 6x + -6x Combine like terms: 6x + -6x = 0 21 + X2 + -6x = 0 The solution to this equation could not be determined.
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