x=suma
x/2-4000 = ziua 1
x-(x/2-4000)=x/2+4000 rest
(x/2+4000)/2+3000=x/4+2000+3000=x/4+5000
x/2-4000+x/4+5000+23000=x
3x/4+24000=x
3x+96000=4x
x=96000
96000/2-4000=44000 lei =ziua 1
52000:2+3000=26000+3000=29000 lei ziua 2
52000-29000=23000 lei ziua 3
metoda 2
23000 ziua 3
23000+3000=26000 lei ziua 2
26000 x2=52000
52000-4000=48000 ziua 1
48000x2=96000 lei suma initiala