Question

ema,victor si daria au folosit pentru un experiment 217 cuburi de gheta. Ema si Victor au folosit 158 de cuburi ,iar Victor si Daria 144 de cuburi. Cite cuburi a folosit fiecare copil? ( Rezolva in doua musuri)

Answer 1

E+V+D=217c.g
E+V=158
V+D=144

158+D=217
D=217-158
D=59 cuburi
E+144=217
E=217-144
E=73 cuburi
73+V+59=217
V+132=217
V=217-132
V=85 cuburi

73+85+59=
=158+59
=217 cuburi de ghiata in total