Ling tried to solve an equation step by step.
\qquad\begin{aligned} -2q+11&=-32 \\ -2q&=-43&\green{\text{Step } 1} \\ q&=21.5&\blue{\text{Step } 2} \end{aligned}
−2q+11
−2q
q


=−32
=−43
=21.5


Step 1
Step 2


Find Ling's mistake.