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Simplifying (X2 + -7) + (x2 + 7) = 0 Reorder the terms: (-7 + X2) + (x2 + 7) = 0 Remove parenthesis around (-7 + X2) -7 + X2 + (x2 + 7) = 0 Reorder the terms: -7 + X2 + (7 + x2) = 0 Remove parenthesis around (7 + x2) -7 + X2 + 7 + x2 = 0 Reorder the terms: -7 + 7 + X2 + x2 = 0 Combine like terms: -7 + 7 = 0 0 + X2 + x2 = 0 X2 + x2 = 0 Solving X2 + x2 = 0 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-1x2' to each side of the equation. X2 + x2 + -1x2 = 0 + -1x2 Combine like terms: x2 + -1x2 = 0 X2 + 0 = 0 + -1x2 X2 = 0 + -1x2 Remove the zero: X2 = -1x2 Simplifying X2 = -1x2 Combine like terms: -1x2 + x2 = 0 X2 + x2 = 0 The solution to this equation could not be determined.
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