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Simplifying -7x + -2(-6x + -15) = -15 Reorder the terms: -7x + -2(-15 + -6x) = -15 -7x + (-15 * -2 + -6x * -2) = -15 -7x + (30 + 12x) = -15 Reorder the terms: 30 + -7x + 12x = -15 Combine like terms: -7x + 12x = 5x 30 + 5x = -15 Solving 30 + 5x = -15 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-30' to each side of the equation. 30 + -30 + 5x = -15 + -30 Combine like terms: 30 + -30 = 0 0 + 5x = -15 + -30 5x = -15 + -30 Combine like terms: -15 + -30 = -45 5x = -45 Divide each side by '5'. x = -9 Simplifying x = -9
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