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Simplifying 3x + -3(-5x + -2) = -138 Reorder the terms: 3x + -3(-2 + -5x) = -138 3x + (-2 * -3 + -5x * -3) = -138 3x + (6 + 15x) = -138 Reorder the terms: 6 + 3x + 15x = -138 Combine like terms: 3x + 15x = 18x 6 + 18x = -138 Solving 6 + 18x = -138 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + 18x = -138 + -6 Combine like terms: 6 + -6 = 0 0 + 18x = -138 + -6 18x = -138 + -6 Combine like terms: -138 + -6 = -144 18x = -144 Divide each side by '18'. x = -8 Simplifying x = -8
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