Simpson Black

06/22/2024 · Junior High School

7. Austin solved the equation as shown below. Which correctly describes the error that Austin made in his work? \[ \begin{array}{cl}\text { Austin's work: } & \text { A. Austin did not combine } 7 x \text { and } 8 x \text { correctly. } \\ -3+7 x-9+8 x=54 & \text { B. Austin did not combine }-3 \text { and }-9 \text { correctly. } \\ 15 x-6=54 & \text { C. Austin did not divide correctly. } \\ 15 x=60 & \text { D. Austin did not make an error in his work. } \\ x=4 & \end{array} \]