Question

ema,victor si daria au folosit 217 cuburi de gheata pentu un proiect.ema si victor au folosit 158cuburi,victor si daria au folosit 144cuburi .cate cuburi au folosit fiecare copil in proiect?a se rezolva in doua moduri

Answer 1

Ema=e

Victor=v

daria=d

e+v+d=217 cuburi

e+v=158

v+d=144

Mod 1: inlocuim e+v=158 => 158+d=217  d=217-158=59  d=159

                           e+144=158  => e=158-144, e=14

                             14+v+159=217  => 173+v=217  v=217-173=44

Mod 2: prin segmente dar nu imi iese

e+v+d=217 cuburi

e+v=158 , e=158-v

v+d=144, v=144-d