$$y-2= \frac{ 1 }{ 5 } (3y-1)$$
$y = \frac{9}{2} = 4\frac{1}{2} = 4.5$
$$y-2=\frac{1}{5}\times 3y+\frac{1}{5}\left(-1\right)$$
$$y-2=\frac{3}{5}y+\frac{1}{5}\left(-1\right)$$
$$y-2=\frac{3}{5}y-\frac{1}{5}$$
$$y-2-\frac{3}{5}y=-\frac{1}{5}$$
$$\frac{2}{5}y-2=-\frac{1}{5}$$
$$\frac{2}{5}y=-\frac{1}{5}+2$$
$$\frac{2}{5}y=-\frac{1}{5}+\frac{10}{5}$$
$$\frac{2}{5}y=\frac{-1+10}{5}$$
$$\frac{2}{5}y=\frac{9}{5}$$
$$y=\frac{9}{5}\times \frac{5}{2}$$
$$y=\frac{9\times 5}{5\times 2}$$
$$y=\frac{9}{2}$$
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