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Simplifying -2x + 7(3x + 18) = -102 Reorder the terms: -2x + 7(18 + 3x) = -102 -2x + (18 * 7 + 3x * 7) = -102 -2x + (126 + 21x) = -102 Reorder the terms: 126 + -2x + 21x = -102 Combine like terms: -2x + 21x = 19x 126 + 19x = -102 Solving 126 + 19x = -102 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-126' to each side of the equation. 126 + -126 + 19x = -102 + -126 Combine like terms: 126 + -126 = 0 0 + 19x = -102 + -126 19x = -102 + -126 Combine like terms: -102 + -126 = -228 19x = -228 Divide each side by '19'. x = -12 Simplifying x = -12
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