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Simplifying i + u = u + i Reorder the terms: i + u = i + u Add '-1i' to each side of the equation. i + -1i + u = i + -1i + u Combine like terms: i + -1i = 0 0 + u = i + -1i + u u = i + -1i + u Combine like terms: i + -1i = 0 u = 0 + u u = u Add '-1u' to each side of the equation. u + -1u = u + -1u Combine like terms: u + -1u = 0 0 = u + -1u Combine like terms: u + -1u = 0 0 = 0 Solving 0 = 0 Couldn't find a variable to solve for. This equation is an identity, all real numbers are solutions.
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