Answer:
X+Y =23
X-Y =7
Is this the answer you were looking for??
Answer:
7/12
Step-by-step explanation:
Rational functions are written as fractions. The expression equivalent to
is 
<h3>Rational functions</h3>
Given the rational function expressed as:

This can be further expressed as:

Factorize the denominator to have;

Hence the expression equivalent to
is 
Learn more on rational function here: brainly.com/question/1917026
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