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Find the mistake: two-step equations


Felix tried to solve an equation step by step.
2(5g1)=35g1=1.5Step 15g=2.5Step 2g=0.5Step 3\qquad\begin{aligned} 2(5g-1)&=3\\\\ \\ 5g-1&=1.5&\green{\text{Step } 1}\\\\ \\ 5g&=2.5&\blue{\text{Step } 2}\\\\ \\ g&=0.5&\purple{\text{Step } 3}\\\\ \end{aligned}
Find Felix's mistake.
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