Which equation is an identity? (Can someone explain to me how they got their answer, I don't get this.)

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asked Jul 14, 2018 65.9k views

1 Answer

Harmony · Answer 1 · 2018-07-21T14:43:15+0000

5w + 8 - w = 6w - 2(w -4).

Let's reduce the equation on the left:

4w + 8; (1)

and now let's reduce the equation on the right

6w - 2w +8 = 4w +8 (2).

We notice that (1) ≈ (2), and this is the only IDENTITY

Which equation is an identity? (Can someone explain to me how they got their answer, I don't get this.)

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