Răspunsuri

2014-04-27T21:34:40+03:00
A+b=508
a-b=2b  a=3b
3b+b=508
4b=508  b=508:4=127
a=3*127=381
2014-04-27T21:39:56+03:00
A+b=508  , a-b=2b⇒a=2b+b⇒a=3b     3b+b=508⇒4b=508⇒b=508÷4⇒b=127                 a+127=508⇒a=508-127⇒a=381        verificare; 381+127=508