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Simplifying -4(2x + 9) = 20 Reorder the terms: -4(9 + 2x) = 20 (9 * -4 + 2x * -4) = 20 (-36 + -8x) = 20 Solving -36 + -8x = 20 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '36' to each side of the equation. -36 + 36 + -8x = 20 + 36 Combine like terms: -36 + 36 = 0 0 + -8x = 20 + 36 -8x = 20 + 36 Combine like terms: 20 + 36 = 56 -8x = 56 Divide each side by '-8'. x = -7 Simplifying x = -7
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