Odpowiedzi

2010-03-17T19:15:53+01:00
80%x+60%*4=70%y /*100
x+4=y


80x+60*4=70y
x=y-4


80(y-4)+240=70y
x=y-4


80y-320+240=70y
x=y-4


80y-70y=320-240
x=y-4


10y=80
x=y-4


y=8
x=8-4


y=8
x=4
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