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Simplifying 3u + 12 = 12 + 3u Reorder the terms: 12 + 3u = 12 + 3u Add '-12' to each side of the equation. 12 + -12 + 3u = 12 + -12 + 3u Combine like terms: 12 + -12 = 0 0 + 3u = 12 + -12 + 3u 3u = 12 + -12 + 3u Combine like terms: 12 + -12 = 0 3u = 0 + 3u 3u = 3u Add '-3u' to each side of the equation. 3u + -3u = 3u + -3u Combine like terms: 3u + -3u = 0 0 = 3u + -3u Combine like terms: 3u + -3u = 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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