$$ 15.8-6.73 $$ is equal to
Correct option is B. $$ 9.07 $$
To subtract two decimals, convert 15.8 into like decimals with 2 decimal places,
$$15.8 =15.80$$
Now, subtracting decimals we get,
$$15.80 - 6.73 = 9.07$$
$$\therefore \textbf{Option B is correct.}$$