Răspunsuri

2014-03-17T20:46:09+02:00
AX3/BX2=3/5
A+B=210
3AX5=3BX2
15A=6B
A=6B/15
6B/15+B=210
21B=210X15
21B=3150
B=150
A+150=210
A=60