19/20=p-1 1/4
$${\frac{{\mathtt{19}}}{{\mathtt{20}}}} = {\mathtt{P}}{\mathtt{\,-\,}}{\mathtt{1}}$$$${\frac{{\mathtt{1}}}{{\mathtt{4}}}}$$
1 1/4=1 5/20+19/20=1 24/20=2 4/20=Simplified:2 1/5
Answer will be 2 1/5
19/20=p-5/4
Then p=19/20 + 5/4=(19 +25)/20=44/20=11/5 which is the value of p