7.5/15 = 1/2, so there are 7.5 fifteenths in one half.
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Seven and a half.
Seven and one-half fifteenths (7.5 fifteenths). **************************************** A bit more explanation: 15 ÷ 2 = 7.5 (Note: a fifteenth is the same as cutting a pie into 15 slices. So simply divide the whole pie by 2.)
5
Two fifths is six fifteenths. Eleven fifteenths minus six fifteenths is five fifteenths, which is also one third.
It is: 3/15 = 1/5