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Simplifying -7(5x + 2) = -399 Reorder the terms: -7(2 + 5x) = -399 (2 * -7 + 5x * -7) = -399 (-14 + -35x) = -399 Solving -14 + -35x = -399 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '14' to each side of the equation. -14 + 14 + -35x = -399 + 14 Combine like terms: -14 + 14 = 0 0 + -35x = -399 + 14 -35x = -399 + 14 Combine like terms: -399 + 14 = -385 -35x = -385 Divide each side by '-35'. x = 11 Simplifying x = 11
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