The expression is

                          (Replace x with 5)

Place value chart for 19.3 and 5.0.

Line up the decimal points and draw a line below the numbers.

First find the difference of the tenths digit.

The difference of the tenths digit =.

Next find the difference of the ones digit.

The difference of the ones digit .

Next find the difference of the tens digit.

The difference of the ones digit .

The value of the expression is .