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Simplifying D2 + 21d + -22 = 0 Reorder the terms: -22 + D2 + 21d = 0 Solving -22 + D2 + 21d = 0 Solving for variable 'D'. Move all terms containing D to the left, all other terms to the right. Add '22' to each side of the equation. -22 + D2 + 22 + 21d = 0 + 22 Reorder the terms: -22 + 22 + D2 + 21d = 0 + 22 Combine like terms: -22 + 22 = 0 0 + D2 + 21d = 0 + 22 D2 + 21d = 0 + 22 Combine like terms: 0 + 22 = 22 D2 + 21d = 22 Add '-21d' to each side of the equation. D2 + 21d + -21d = 22 + -21d Combine like terms: 21d + -21d = 0 D2 + 0 = 22 + -21d D2 = 22 + -21d Simplifying D2 = 22 + -21d Reorder the terms: -22 + D2 + 21d = 22 + -21d + -22 + 21d Reorder the terms: -22 + D2 + 21d = 22 + -22 + -21d + 21d Combine like terms: 22 + -22 = 0 -22 + D2 + 21d = 0 + -21d + 21d -22 + D2 + 21d = -21d + 21d Combine like terms: -21d + 21d = 0 -22 + D2 + 21d = 0 The solution to this equation could not be determined.
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