Asked by Gina
If x/4+y/5=19/20 where x and y are positive integers then x+y is?
If you multiply through by 20 then you'll have 5x+4y=19 where x and y are positivie integers. Can you solve that? Hint: you only need to look at the integers less than 4.
Thanx a lot.
If you multiply through by 20 then you'll have 5x+4y=19 where x and y are positivie integers. Can you solve that? Hint: you only need to look at the integers less than 4.
Thanx a lot.
Answers
Answered by
Oh please
Modular arithmetic..
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