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Simplifying 12(x + 3) = 4(3x + 9) Reorder the terms: 12(3 + x) = 4(3x + 9) (3 * 12 + x * 12) = 4(3x + 9) (36 + 12x) = 4(3x + 9) Reorder the terms: 36 + 12x = 4(9 + 3x) 36 + 12x = (9 * 4 + 3x * 4) 36 + 12x = (36 + 12x) Add '-36' to each side of the equation. 36 + -36 + 12x = 36 + -36 + 12x Combine like terms: 36 + -36 = 0 0 + 12x = 36 + -36 + 12x 12x = 36 + -36 + 12x Combine like terms: 36 + -36 = 0 12x = 0 + 12x 12x = 12x Add '-12x' to each side of the equation. 12x + -12x = 12x + -12x Combine like terms: 12x + -12x = 0 0 = 12x + -12x Combine like terms: 12x + -12x = 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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