Question

what is
1/5x51/2 ???

Answer 1

Multiply the numerator together and denominator together.

51 x 1 and 5 x 2

51/ 10

after you simplify, you get 5 1/10

(to double check you do 10 x 5 + 1 and that should give you 51 which is the numerator)

Answer 2

the answer to your problem is $\frac{51}{1}$ or 5$\frac{1}{10}$