Question

Chase tried to solve an equation step by step.


\[\qquad\begin{aligned}
\dfrac{1}3(g-3)&=3\\\\
\\
g-3&=9&\green{\text{Step } 1}\\\\
\\
g&=12&\blue{\text{Step } 2}\\\\
\end{aligned}\]
Find Chase's mistake.
Choose 1 answer:
A
\[\green{\text{Step }1}\]
B
\[\blue{\text{Step }2}\]
C
Chase did not make a mistake.

Answer 1

C

Both steps are correct. Multiplying (1/3)(g−3)=3 by 3 gives g−3=9, and adding 3 to both sides gives g=12. Substituting back: (1/3)(12−3)=(1/3)·9=3.