pre-algebra

Please help me, help my son:

a(a-c)=23, solve for the value of c

Thanks

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asked by ingrid
  1. a(a-c)=23
    a-c=23/a
    c=a-23/a

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    posted by Mischa
  2. Since 23 is a prime number it can only have two factors: 23 and 1. Therefore, A must equal 23 and C must equal 22.

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    posted by GW

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