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Simplifying (X + -20)(x + -20) = 18 Reorder the terms: (-20 + X)(x + -20) = 18 Reorder the terms: (-20 + X)(-20 + x) = 18 Multiply (-20 + X) * (-20 + x) (-20(-20 + x) + X(-20 + x)) = 18 ((-20 * -20 + x * -20) + X(-20 + x)) = 18 ((400 + -20x) + X(-20 + x)) = 18 (400 + -20x + (-20 * X + x * X)) = 18 (400 + -20x + (-20X + xX)) = 18 Reorder the terms: (400 + -20X + -20x + xX) = 18 (400 + -20X + -20x + xX) = 18 Solving 400 + -20X + -20x + xX = 18 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-400' to each side of the equation. 400 + -20X + -20x + -400 + xX = 18 + -400 Reorder the terms: 400 + -400 + -20X + -20x + xX = 18 + -400 Combine like terms: 400 + -400 = 0 0 + -20X + -20x + xX = 18 + -400 -20X + -20x + xX = 18 + -400 Combine like terms: 18 + -400 = -382 -20X + -20x + xX = -382 Add '20x' to each side of the equation. -20X + -20x + 20x + xX = -382 + 20x Combine like terms: -20x + 20x = 0 -20X + 0 + xX = -382 + 20x -20X + xX = -382 + 20x Reorder the terms: 382 + -20X + -20x + xX = -382 + 20x + 382 + -20x Reorder the terms: 382 + -20X + -20x + xX = -382 + 382 + 20x + -20x Combine like terms: -382 + 382 = 0 382 + -20X + -20x + xX = 0 + 20x + -20x 382 + -20X + -20x + xX = 20x + -20x Combine like terms: 20x + -20x = 0 382 + -20X + -20x + xX = 0 The solution to this equation could not be determined.
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