8) 2gaini+1gasca+1curcan=80lei
1curcan=2gaste
1gasca=2gaini
1curcan=?
1gasca+1gasca+2gaste=80lei
4gaste=80lei
1gasca=80:4 => 1gasca=20lei
1gasca=2gaini => 1gaina=20:2 => 1gaina=10lei
1curcan=2gaste => 1curcan=2x20lei => 1curcan=40lei
9) C=2R
R=M+49lei
M=27lei
C=?lei
R=27+49 => R=76lei
C=2x76 => C=152lei
C=Catalina; R= Ramona; M= Mihaela
