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What value of dd is a solution to this equation?\newlined+9=20d + 9 = 20\newlineChoices:\newline(A)d=10d = 10\newline(B)d=11d = 11

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Full solution

Q. What value of dd is a solution to this equation?\newlined+9=20d + 9 = 20\newlineChoices:\newline(A)d=10d = 10\newline(B)d=11d = 11
  1. Subtract 99 from both sides: To find the value of dd, we need to isolate dd on one side of the equation. We can do this by subtracting 99 from both sides of the equation.\newlineCalculation: d+9−9=20−9d + 9 - 9 = 20 - 9
  2. Calculate value of d: After performing the subtraction, we get the value of dd.\newlineCalculation: d=20−9d = 20 - 9
  3. Perform actual subtraction: Now we perform the actual subtraction to find the value of dd.\newlineCalculation: d=11d = 11

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