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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


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What is the Answer?
-1 = -1
How does the Subtraction Equality Property Calculator work?
Free Subtraction Equality Property Calculator - Demonstrates the Subtraction Equality Property Numerical Properties
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What 1 formula is used for the Subtraction Equality Property Calculator?

If a = b, then a - c = b - c

For more math formulas, check out our Formula Dossier

What 5 concepts are covered in the Subtraction Equality Property Calculator?

equality
The state of being equal. A relationship between two quantities or two mathematical expressions, asserting that the quantities have the same value, or that the expressions represent the same mathematical object
number
an arithmetical value, expressed by a word, symbol, or figure, representing a particular quantity and used in counting and making calculations and for showing order in a series or for identification. A quantity or amount.
property
an attribute, quality, or characteristic of something
subtraction
math operation involving the difference of elements
subtraction equality property
balancing an equation by using the same mathematical operation on both sides
If a = b, then a - c = b - c
Example calculations for the Subtraction Equality Property Calculator

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