20/4x(13-5)

I'm trying to help my son with his math hw and this problem is giving me fits! If we works it in the order he's tought "P.E.M.D.A.S" it comes down to 20/32 as the final step, which makes no sense to me.. Help please..
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2 Answers

20 / 4(13-5)

Yes, PEMDAS works here.

Parentheses first, so you get

20 / 4(8)

no Exponents

Multiply, so you get

20 / 32

That's the answer, but you can simplify it.  Divide the top by 4 and the bottom by 4 and you get

5 / 8
by Level 13 User (103k points)
he was right
by

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