Răspunsuri

2014-04-13T14:16:12+03:00
X-nr
x/2-jumatate
x-x/2 =2x-x/2=x/2-restul
x/2-x/2/4=x/2-x/2*1/4=x/2-x/8=4x-x/8=3x/8-sfertul
x/2-3x/8=4x-3x/8=x/8-noul rest
x/8-x/8/3=x/8-x/8*1/3=  x/8-x/24=3x-x/24=2x/24
2x/24=56
x=24*56/2
x=12*56
x=672