Given two numbers a = 8 and c = 9:
Prove the Property of Equality
Definition
For three numbers a, b, and c
If a = b, then a - c = b - c
Set b = a
b = 8
Plug in our numbers:
a - c = 8 - 9
b - c = 8 - 9
Evaluating, we get:
a - c = -1
b - c = -1
Final Answer
-1 = -1
