$$\frac { x } { 2 } - \frac { 4 } { 5 } = \frac { x } { 3 } + \frac { 1 } { 4 }$$
$x = \frac{63}{10} = 6\frac{3}{10} = 6.3$
$$30x-48=20x+15$$
$$30x-48-20x=15$$
$$10x-48=15$$
$$10x=15+48$$
$$10x=63$$
$$x=\frac{63}{10}$$
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