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Simplifying -1(x + 6) + 9 = 2x + 3 + -3x Reorder the terms: -1(6 + x) + 9 = 2x + 3 + -3x (6 * -1 + x * -1) + 9 = 2x + 3 + -3x (-6 + -1x) + 9 = 2x + 3 + -3x Reorder the terms: -6 + 9 + -1x = 2x + 3 + -3x Combine like terms: -6 + 9 = 3 3 + -1x = 2x + 3 + -3x Reorder the terms: 3 + -1x = 3 + 2x + -3x Combine like terms: 2x + -3x = -1x 3 + -1x = 3 + -1x Add '-3' to each side of the equation. 3 + -3 + -1x = 3 + -3 + -1x Combine like terms: 3 + -3 = 0 0 + -1x = 3 + -3 + -1x -1x = 3 + -3 + -1x Combine like terms: 3 + -3 = 0 -1x = 0 + -1x -1x = -1x Add 'x' to each side of the equation. -1x + x = -1x + x Combine like terms: -1x + x = 0 0 = -1x + x Combine like terms: -1x + x = 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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