Răspunsuri

2014-04-24T16:49:46+03:00
2a+5b+3c

a+b=20
b+c=30

2a+2b+3b+3c
2(a+b)+3(b+c).   inlocium
2*20+3*30=
40+90=130
Multumesc!! :*
cu placere
unde nu intelegi intreaba
Da :)