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I'm dealing with some TV character's lines that speak in slang, and I don't understand what is the meaning of this "～てりゃ" in the following sentence:

適当にやってりゃいいだろう。

Here the context:

There are three girl in a classroom. The first girl tell to the second one that she must act more seriously. Next, the third girl say the line abovementioned, in defense of the second.

I was thinking, may be that "ってりゃ" a simply variation of "ている"? And if it is so, which is its origin? And, have it a special nuance of meaning?

May you help me to understand? Thks in advance!

Daroro814
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1 Answers1

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It is a variant of やってれば:

適当にやってればいいだろう。

Similarly to なければ → なけりゃ

macraf
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