Problem

Yusuf tried to solve an equation step by step.
14r+2=1014r=12Step 1r=48Step 2\qquad\begin{aligned} \dfrac14r+2&=10\\\\ \\ \dfrac14r&=12&\green{\text{Step } 1}\\\\ \\ r&=48&\blue{\text{Step } 2}\\\\ \end{aligned}
Find Yusuf's mistake.
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