Which axiom of equality is illustrated in each of the following?
a)  5 = 5 
b)  If

c)  Because 2 + 3 = 5, we may replace x + (2 + 3) by x + 5. 
d)  If 7 = 2x – 3, then 2x – 3 = 7. 
a)
To find:
The name of the axiom of equality
Definition Used:
According to reflexive property of equality “Any value is equal to itself.”
Calculation:
It is given that 5 = 5.
Here, 5 is equal to itself...
b)
To find:
The name of the axiom of equality
c)
To find:
The name of the axiom of equality
d)
To find:
The name of the axiom of equality
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