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Simplifying 9x + 12 = 2(3x + 7) + 3x + -2 Reorder the terms: 12 + 9x = 2(3x + 7) + 3x + -2 Reorder the terms: 12 + 9x = 2(7 + 3x) + 3x + -2 12 + 9x = (7 * 2 + 3x * 2) + 3x + -2 12 + 9x = (14 + 6x) + 3x + -2 Reorder the terms: 12 + 9x = 14 + -2 + 6x + 3x Combine like terms: 14 + -2 = 12 12 + 9x = 12 + 6x + 3x Combine like terms: 6x + 3x = 9x 12 + 9x = 12 + 9x Add '-12' to each side of the equation. 12 + -12 + 9x = 12 + -12 + 9x Combine like terms: 12 + -12 = 0 0 + 9x = 12 + -12 + 9x 9x = 12 + -12 + 9x Combine like terms: 12 + -12 = 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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