Răspunsuri

2014-10-24T18:10:06+03:00
3a=2b
a+b= 250
a= 250-b si inlocuim in formula de sus
3(250-b)=2b
750-3b=2b
750=2b+3b
750=5b
b=750: 5=150
3a=2b  3a=2x150    3a=300  a= 300:3    a=100
verificare
3x100=2x150
300=300