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Simplifying (X + -2)(x + 9) = 80 Reorder the terms: (-2 + X)(x + 9) = 80 Reorder the terms: (-2 + X)(9 + x) = 80 Multiply (-2 + X) * (9 + x) (-2(9 + x) + X(9 + x)) = 80 ((9 * -2 + x * -2) + X(9 + x)) = 80 ((-18 + -2x) + X(9 + x)) = 80 (-18 + -2x + (9 * X + x * X)) = 80 (-18 + -2x + (9X + xX)) = 80 Reorder the terms: (-18 + 9X + -2x + xX) = 80 (-18 + 9X + -2x + xX) = 80 Solving -18 + 9X + -2x + xX = 80 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 + 9X + -2x + 18 + xX = 80 + 18 Reorder the terms: -18 + 18 + 9X + -2x + xX = 80 + 18 Combine like terms: -18 + 18 = 0 0 + 9X + -2x + xX = 80 + 18 9X + -2x + xX = 80 + 18 Combine like terms: 80 + 18 = 98 9X + -2x + xX = 98 Add '2x' to each side of the equation. 9X + -2x + 2x + xX = 98 + 2x Combine like terms: -2x + 2x = 0 9X + 0 + xX = 98 + 2x 9X + xX = 98 + 2x Reorder the terms: -98 + 9X + -2x + xX = 98 + 2x + -98 + -2x Reorder the terms: -98 + 9X + -2x + xX = 98 + -98 + 2x + -2x Combine like terms: 98 + -98 = 0 -98 + 9X + -2x + xX = 0 + 2x + -2x -98 + 9X + -2x + xX = 2x + -2x Combine like terms: 2x + -2x = 0 -98 + 9X + -2x + xX = 0 The solution to this equation could not be determined.
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