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WILL GIVE BRANLIEST PLEASE HELP!

Which statement is correctly written as a biconditional statement?

The equation x+3=9 is true when x=6.
If the equation x+3=9 is true, then x=6.
The equation x+3=9 is true if and only if x=6.
The equation x+3=9 is true or x=6.

Respuesta :

The equation x+3=9 is true if and only if x=6.

A bioconditional statement is always written in the “if and only if” form

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