Value of variable 3

Very easy

Execution time limit is 1 second

Runtime memory usage limit is 128 megabytes

Find the value of the variable $y$ for a given real value of the variable $x$ .

y = \frac{x ^{2} + 3 x - 4}{2 x - 3} - \frac{x + 2}{x ^{2} - 5 x + 7}

Input

Value of the variable $x$ .

Print the value of the variable $y$ up to thousandths.

Input #1

Answer #1

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