To accurately identify the property that justifies Step 3 when solving an equation, I would need to know what that specific step entails.
However, I can provide a brief overview of each property:
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Reflexive Property: This states that a quantity is equal to itself (e.g., \( a = a \)).
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Addition Property: This states that if you add the same value to both sides of an equation, the equation remains true (e.g., if \( a = b \), then \( a + c = b + c \)).
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Substitution Property: This property allows you to replace a variable with another value or expression in an equation (e.g., if \( a = b \), then \( f(a) = f(b) \)).
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Multiplication Property: This states that if you multiply both sides of an equation by the same value, the equation remains true (e.g., if \( a = b \), then \( ac = bc \)).
If you can provide the specific details of Step 3 or the context of the problem, I can better help determine which property is needed.