Question

Ema ,Victor si Daria au folosit pentru un experiment 217 cuburi de gheata .Ema si Victor au foslosit 158 de cuburi ,iar Victor si Daria 144 de cuburi.
Cate cuburi a folosit fiecare copil ? (rezolva in doua moduri )

Answer 1

E+V+D=217
E+V=158 ⇒ D=217-158=59 (cuburi gheata)
V+D=144 ⇒ E=217-144=73 (cuburi gheata)
V=217-59-73=85 (cuburi gheata)

Answer 2

E+v+d =217
E+V=158=>D= 217-158=59
V+D=144=>E=217-144=73
V=217-55-73=85