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Simplifying 7(3 + X) + 2X = -6 (3 * 7 + X * 7) + 2X = -6 (21 + 7X) + 2X = -6 Combine like terms: 7X + 2X = 9X 21 + 9X = -6 Solving 21 + 9X = -6 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-21' to each side of the equation. 21 + -21 + 9X = -6 + -21 Combine like terms: 21 + -21 = 0 0 + 9X = -6 + -21 9X = -6 + -21 Combine like terms: -6 + -21 = -27 9X = -27 Divide each side by '9'. X = -3 Simplifying X = -3
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