Algebra

How do you write out 5 by 13 product of 13 and z?

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asked by Tia
  1. The language is ambiguous. I can't see where to put the parentheses
    "5 by 13" means 5/13
    "product of 13 and z" means 13*z or 13z

    Just not sure what do do with
    (5 by 13) (product of 13 and z)
    is that another product, a sum, fraction?

    so maybe (5/13)(13z) = 5z ?

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