Răspunsuri

2014-11-08T20:31:13+02:00


x+y+z=1988  y/x=3 z/y=2+108  y=3x  z=2y+108 prima formula devine:

x+3x+6x+108=1988  10x=1988-108  10x=1880  x=188  y=3*188=564

z=2*564+108=1236


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