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Simplifying 2X + 9 = 3X + -12 Reorder the terms: 9 + 2X = 3X + -12 Reorder the terms: 9 + 2X = -12 + 3X Solving 9 + 2X = -12 + 3X Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-3X' to each side of the equation. 9 + 2X + -3X = -12 + 3X + -3X Combine like terms: 2X + -3X = -1X 9 + -1X = -12 + 3X + -3X Combine like terms: 3X + -3X = 0 9 + -1X = -12 + 0 9 + -1X = -12 Add '-9' to each side of the equation. 9 + -9 + -1X = -12 + -9 Combine like terms: 9 + -9 = 0 0 + -1X = -12 + -9 -1X = -12 + -9 Combine like terms: -12 + -9 = -21 -1X = -21 Divide each side by '-1'. X = 21 Simplifying X = 21
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