Question

ema, victor si daria au folosit 217 cuburi. ema si victor au folosit 158 cuburi, victor si daria 144 cuburi. cate cuburi au folosit fiecare?

Answer 1

E+v+d= 217 E+v =158 => d=217-158 v+d=144 => e=217-144 V=217-e-d E cam acelasi lucru

Answer 2

simplu
e=ema
v=victor
d=daria
158=s1
144=s2
e+v+d=217
e+v=158
v+d=144
d=s1-s2
v=s2-d
e=s1-v
hai ca nu-ti dau chiar mura-n gura