$1/5+3xx(17/3xx7/17-7/4)-3/20-5/13xx(1+5/8)$

$1/5+3xx(7/3-7/4)-3/20-5/13xx(8+5)/8$
$1/5+3xx(28-21)/12-3/20-5/13xx13/8$
$1/5+3xx7/12-3/20-5/8$
$1/5+21/12-3/20-5/8$
$(24+210-18-75)/120$
$141/120$
$47/40$

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