Question

If x=y and a=b then x+a=y+b write the Euclid's axiom involved in the above statement

Answer 1

It involves the first Euclid's axiom which states that “Things which are equal to the same thing are also equal to one another.”

Answer 2

From Euclid's axiom we can say when a variable is equal to the other variable and that variable is also equal to another variable then we can say the all three variables are same and equal.