QUESTION $20$ What does the statement $)=(x+y$ imply about real numbers? a$.$ For every pair of real numbers, their sum equals zero b$.$ For every pair of real numbers, there exists a real number that is their product c$.$ For every pair of real numbers, there exists a real number, that is their sum d$.$ There exists a unique real number that is the sum of all pairs of real numbers. QUESTION $20$ What does the statement $)=(x+y$ imply about real numbers? a$.$ For every pair of real numbers, their sum equals zero b$.$ For every pair of real numbers, there exists a real number that is their product c$.$ For every pair of real numbers, there exists a real number, that is their sum d$.$ There exists a un