Answer:
13 / 3
Step-by-step explanation:
you swap the denominator and numerator
The reciprocal of a number [tex]x[/tex] may be found by [tex]\frac{1}{x}[/tex], so the reciprocal of [tex]\frac3{13}[/tex] is [tex]\frac{1}{\frac3{13}} = \boxed{\frac{13}3}[/tex].
