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Simplifying 9x + 27 = 9(2 + x) + 9 Reorder the terms: 27 + 9x = 9(2 + x) + 9 27 + 9x = (2 * 9 + x * 9) + 9 27 + 9x = (18 + 9x) + 9 Reorder the terms: 27 + 9x = 18 + 9 + 9x Combine like terms: 18 + 9 = 27 27 + 9x = 27 + 9x Add '-27' to each side of the equation. 27 + -27 + 9x = 27 + -27 + 9x Combine like terms: 27 + -27 = 0 0 + 9x = 27 + -27 + 9x 9x = 27 + -27 + 9x Combine like terms: 27 + -27 = 0 9x = 0 + 9x 9x = 9x Add '-9x' to each side of the equation. 9x + -9x = 9x + -9x Combine like terms: 9x + -9x = 0 0 = 9x + -9x Combine like terms: 9x + -9x = 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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