Răspunsuri

2014-11-13T22:03:53+02:00
A+b=50 | x2 => 2a+2b=100
2a+3b=113
2a=113-3b
113-3b+2b=100
-b=-13 = > b=13
a+13=50 => a = 37
2014-11-13T22:06:51+02:00
A+b=50=>a=50-b
2a+3b=113=>2(50-b)+3b=113=>100-2b+3b=113=>100+b=113=>b=13
Daca b=13=>a+13=50=>a=37