2y - 14y + 1 = 15⇒52y - 1 = 14y + 1⇒10y - 5 = 4y + 1⇒10y - 4y = 1 + 5⇒6y = 6⇒y = 66 = 1

2y-14y+1=15

\frac{2 y - 1}{4 y + 1} = \frac{1}{5} \Rightarrow 5 (2 y - 1) = 1 (4 y + 1) \Rightarrow 10 y - 5 = 4 y + 1 \Rightarrow 10 y - 4 y = 1 + 5 \Rightarrow 6 y = 6 \Rightarrow y = \frac{6}{6} = 1

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