$$x + \frac { 2 } { 5 } = 3$$
$x = \frac{13}{5} = 2\frac{3}{5} = 2.6$
$$x=3-\frac{2}{5}$$
$$x=\frac{15}{5}-\frac{2}{5}$$
$$x=\frac{15-2}{5}$$
$$x=\frac{13}{5}$$
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