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Simplifying 2(4x + -9) = -90 Reorder the terms: 2(-9 + 4x) = -90 (-9 * 2 + 4x * 2) = -90 (-18 + 8x) = -90 Solving -18 + 8x = -90 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '18' to each side of the equation. -18 + 18 + 8x = -90 + 18 Combine like terms: -18 + 18 = 0 0 + 8x = -90 + 18 8x = -90 + 18 Combine like terms: -90 + 18 = -72 8x = -72 Divide each side by '8'. x = -9 Simplifying x = -9
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