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Is f=−2f = -2 a solution to this equation?\newline9−f=119 - f = 11\newlineChoices:\newline(A)yes\newline(B)no

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Full solution

Q. Is f=−2f = -2 a solution to this equation?\newline9−f=119 - f = 11\newlineChoices:\newline(A)yes\newline(B)no
  1. Identify Equation After Substitution: We have the equation 9−f=119 - f = 11. Identify the equation after substituting f=−2f = -2.\newlineSubstitute −2-2 for ff in 9−f=119 - f = 11.\newlineEquation: 9−(−2)=119 - (-2) = 11
  2. Substitute and Simplify: Simplify 9−(−2)9 − (−2).9−(−2)=9+2=119 − (−2) = 9 + 2 = 11
  3. Verify Solution: We found: 9−(−2)=119 - (-2) = 11\newlineIs f=−2f = -2 a solution to the equation 9−f=119 - f = 11?\newlineFor f=−2f = -2, the equation becomes 11=1111 = 11, which is true.\newlineSo, f=−2f = -2 is a solution to the equation 9−f=119 - f = 11.

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