=

:value1 = value2

If the two values are equivalent, this returns true. Else, this returns false. This is equivalent to not(value1≠value2), or to be really complex: not(value1>value2 or value1<value2).

Location[]

TI-84

TEST (2nd MATH)
TEST
1:=

TI-89

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TI-nspire

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Example[]

:Input "NUMBER:",X
:If X=5:Then
:Output(1,1,"IT'S 5
:Else
:Output(1,1,"NOT 5

This program will only perform the text following the If/Then command if the number the user inputted is 5, or equal to 5. The user need not directly input 5. For example, they could input 2+3 and still obtain the same results.