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Simplifying 3(k + 4) = 3k + 12 Reorder the terms: 3(4 + k) = 3k + 12 (4 * 3 + k * 3) = 3k + 12 (12 + 3k) = 3k + 12 Reorder the terms: 12 + 3k = 12 + 3k Add '-12' to each side of the equation. 12 + -12 + 3k = 12 + -12 + 3k Combine like terms: 12 + -12 = 0 0 + 3k = 12 + -12 + 3k 3k = 12 + -12 + 3k Combine like terms: 12 + -12 = 0 3k = 0 + 3k 3k = 3k Add '-3k' to each side of the equation. 3k + -3k = 3k + -3k Combine like terms: 3k + -3k = 0 0 = 3k + -3k Combine like terms: 3k + -3k = 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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