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Simplifying X2 + -7x = 21 + -3x Solving X2 + -7x = 21 + -3x Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '7x' to each side of the equation. X2 + -7x + 7x = 21 + -3x + 7x Combine like terms: -7x + 7x = 0 X2 + 0 = 21 + -3x + 7x X2 = 21 + -3x + 7x Combine like terms: -3x + 7x = 4x X2 = 21 + 4x Simplifying X2 = 21 + 4x Reorder the terms: -21 + X2 + -4x = 21 + 4x + -21 + -4x Reorder the terms: -21 + X2 + -4x = 21 + -21 + 4x + -4x Combine like terms: 21 + -21 = 0 -21 + X2 + -4x = 0 + 4x + -4x -21 + X2 + -4x = 4x + -4x Combine like terms: 4x + -4x = 0 -21 + X2 + -4x = 0 The solution to this equation could not be determined.
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