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Is d=−9d = -9 a solution to this equation?\newline1=−8−d1 = -8 - d\newlineChoices:\newline(A)yes\newline(B)no

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Full solution

Q. Is d=−9d = -9 a solution to this equation?\newline1=−8−d1 = -8 - d\newlineChoices:\newline(A)yes\newline(B)no
  1. Identify Equation: Identify the equation after substituting d=−9d = -9.\newlineSubstitute −9-9 for dd in 1=−8−d1 = -8 - d. \newlineEquation: 1=−8−(−9)1 = -8 - (-9)
  2. Simplify Right Side: Simplify the right side of the equation.\newline1=−8+91 = -8 + 9 (since subtracting a negative is the same as adding the positive)
  3. Perform Addition: Perform the addition on the right side.\newline1=11 = 1 (since –8+9–8 + 9 equals 11)
  4. Compare Sides: Compare both sides of the equation.\newlineSince both sides of the equation are equal 1=11 = 1, d=−9d = -9 is indeed a solution to the equation 1=−8−d1 = -8 - d.

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