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Simplifying 3(x2 + 4) = 3x2 + 12 Reorder the terms: 3(4 + x2) = 3x2 + 12 (4 * 3 + x2 * 3) = 3x2 + 12 (12 + 3x2) = 3x2 + 12 Reorder the terms: 12 + 3x2 = 12 + 3x2 Add '-12' to each side of the equation. 12 + -12 + 3x2 = 12 + -12 + 3x2 Combine like terms: 12 + -12 = 0 0 + 3x2 = 12 + -12 + 3x2 3x2 = 12 + -12 + 3x2 Combine like terms: 12 + -12 = 0 3x2 = 0 + 3x2 3x2 = 3x2 Add '-3x2' to each side of the equation. 3x2 + -3x2 = 3x2 + -3x2 Combine like terms: 3x2 + -3x2 = 0 0 = 3x2 + -3x2 Combine like terms: 3x2 + -3x2 = 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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