How do I find the greater minor number that is divisible by 'n'?

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How do I find the greatest minor number that is divisible by 'n'?
For example, if I have the number 730 and I want to find the greatest number minor than 730 that when divided by 7 gives me an integer.
I need to write that for 3 cases: divisible by 7, 15 and 30...
tks!

Accepted Answer

kjetil87
kjetil87 on 23 Jul 2013
x=730-rem(730,7)

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