Question

Vlad tried to solve an equation step by step.

\[\qquad\begin{aligned}
-8p+14&=42\\\\
\\
-8p&=28&\green{\text{Step } 1}\\\\
\\
p&=-3.5&\blue{\text{Step } 2}\\\\
\end{aligned}\]
Find Vlad's mistake.
Choose 1 answer:
A
\[\green{\text{Step }1}\]
B
\[\blue{\text{Step }2}\]
C
Vlad did not make a mistake.

Answer 1

C

Both steps are correct: subtracting 14 gives -8p = 28, and dividing by -8 gives p = 28/(-8) = -3.5, which checks in the original equation.