Evaluate the Expression: Converting Ratio 19:8 to Standard Form

Let us begin by decomposing 19 into a subtraction exercise:

$(20-1):8=$

Next we divide each term inside of the parentheses by 8:

$20:8-1:8=$

We can see that answers C+D can be discarded since we divided 20 by 8.

Now we write the division exercise on the right as a fraction and we get:

$20:8-\frac{1}{8}$