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Simplifying X2 = 21 + -7x2 Solving X2 = 21 + -7x2 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Simplifying X2 = 21 + -7x2 Reorder the terms: -21 + X2 + 7x2 = 21 + -7x2 + -21 + 7x2 Reorder the terms: -21 + X2 + 7x2 = 21 + -21 + -7x2 + 7x2 Combine like terms: 21 + -21 = 0 -21 + X2 + 7x2 = 0 + -7x2 + 7x2 -21 + X2 + 7x2 = -7x2 + 7x2 Combine like terms: -7x2 + 7x2 = 0 -21 + X2 + 7x2 = 0 The solution to this equation could not be determined.
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