Question

pe creanaga unui cires au poposit vrabiisi randunele,in total 18 pasari.randunelele sunt cu 8 mai putine decat vrabii. cate vrabii si cate se afla pa creanga ciresiului?

Answer 1

v+r=18
r=v-8
v+v-8=18
2v=18+8=26
v=26:2
v=13
r=13-8
r=5
v:13+5=18
r: 13 vrabii
     5 randunele

Answer 2

r  /-----------/
v /-----------/--8--/
18-8=10
10:2=5
r=5
v=5+8
v=13
5+13=18 pasari