math

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can someone check my answers

subtract 7/9-(-13/19)=3/2

multiply

(4)(-3/2)=-6f

find the first and third quaritles q1 and q3 of the following set of numbers
13,4,12,16,8,14,8,3,10,8,
my answer 4:12

find the first and third quaritles q1 and q3 of the following set of numbers
.16,.08,.27,.20,.22,.32,.25,.18,.28,.27
my answer .18
;27

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