
Now, when I get to this EQUATION here,
really let me have it.
The Big Bang Theory Season 10, Episode 19

out of the EQUATION.
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An EQUATION.
The Big Bang Theory Season 11, Episode 14

Solve the EQUATION.
The Big Bang Theory Season 1, Episode 13

Oh. Really?
Are you familiar with the Drake EQUATION?
The Big Bang Theory Season 2, Episode 20