Respostas

2013-11-10T20:21:29-02:00
x=notas de 50,00........y=notas de 100,00 

{50x+100y=2300 
{x+y=30...............(*-50) 

{50x+100y=2300 
{-50x-50y=-1500 
------------------------ 
50y=800 
y=800/50=80/5= 16 >> (notas de R$100,00)

x+y=30 
x=30-y=30-16= 14 >> (notas de R$50,00) 
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