The expression is

                             (Replace x with 5)

Place value chart for 19.3and 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 =.

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Next find the difference of the tens digit.

The difference of the ones digit =.

The value of the expression is .