There are 9 invitations mail that has already been mailed.
A fraction is a quantity that is not a whole number. In maths, a fraction usually has a numerator and a denominator.
Lee is sending out 32 birthday invites she gives 5 to family and a third of the rest,
The number of invitations Leah has already mailed is given by;
Number of invitations mailed = 1/3 x (total invitation - invitation mom delivered)
Number of invitations mailed =1/3 x (32 - 5)
Number of invitations mailed =1/3 x (27)
Number of invitations mailed = 9
Hence, there are 9 invitations mail that has already been mailed.
Learn more about fractions here;
https://brainly.com/question/22688206
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