متتابعة حسابية سوووووووووووووخنة

[ABOFARES MOSTAFA]

if there exists four arithmetic means between A and B ,and there exists another five arithemetic means between A and B if the sum of the five means exceeds the sum of the four means by 15.5 and if the first mean of the four means exceeds the first means of the five means by 0.5 then find A and B