15/6....how many times does 6 go into 15 without going over ? It goes in there 2 times. 2 x 6 = 12. So 2 is ur whole number. Now take 15 and subtract 12 which gives u 3...that is ur numerator...the denominator stays the same.
so ur mixed number is 2 3/6...but ur 3/6 reduces making ur mixed number be
2 1/2