71/5 - 41/15

You left out two other possible permutaions, Melody

71/5 - (4 + 1/15)

and

(7 + 1/5) - (41/15)

(LOL!!!)

11.46

nailed it:P

$$\left({\mathtt{7}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{1}}}{{\mathtt{5}}}}\right){\mathtt{\,-\,}}\left({\mathtt{4}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{1}}}{{\mathtt{15}}}}\right) = {\frac{{\mathtt{47}}}{{\mathtt{15}}}} = {\mathtt{3.133\: \!333\: \!333\: \!333\: \!333\: \!3}}$$

Is that your question?

OR is this your question?

$${\frac{{\mathtt{71}}}{{\mathtt{5}}}}{\mathtt{\,-\,}}{\frac{{\mathtt{41}}}{{\mathtt{15}}}} = {\frac{{\mathtt{172}}}{{\mathtt{15}}}} = {\mathtt{11.466\: \!666\: \!666\: \!666\: \!666\: \!7}}$$

So I did - thanks Chris. :)