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Simplifying (D + -2)(d + -8) = 4 Reorder the terms: (-2 + D)(d + -8) = 4 Reorder the terms: (-2 + D)(-8 + d) = 4 Multiply (-2 + D) * (-8 + d) (-2(-8 + d) + D(-8 + d)) = 4 ((-8 * -2 + d * -2) + D(-8 + d)) = 4 ((16 + -2d) + D(-8 + d)) = 4 (16 + -2d + (-8 * D + d * D)) = 4 (16 + -2d + (-8D + dD)) = 4 Reorder the terms: (16 + -8D + -2d + dD) = 4 (16 + -8D + -2d + dD) = 4 Solving 16 + -8D + -2d + dD = 4 Solving for variable 'D'. Move all terms containing D to the left, all other terms to the right. Add '-16' to each side of the equation. 16 + -8D + -2d + -16 + dD = 4 + -16 Reorder the terms: 16 + -16 + -8D + -2d + dD = 4 + -16 Combine like terms: 16 + -16 = 0 0 + -8D + -2d + dD = 4 + -16 -8D + -2d + dD = 4 + -16 Combine like terms: 4 + -16 = -12 -8D + -2d + dD = -12 Add '2d' to each side of the equation. -8D + -2d + 2d + dD = -12 + 2d Combine like terms: -2d + 2d = 0 -8D + 0 + dD = -12 + 2d -8D + dD = -12 + 2d Reorder the terms: 12 + -8D + -2d + dD = -12 + 2d + 12 + -2d Reorder the terms: 12 + -8D + -2d + dD = -12 + 12 + 2d + -2d Combine like terms: -12 + 12 = 0 12 + -8D + -2d + dD = 0 + 2d + -2d 12 + -8D + -2d + dD = 2d + -2d Combine like terms: 2d + -2d = 0 12 + -8D + -2d + dD = 0 The solution to this equation could not be determined.
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