Răspuns :
rev1 + rev2 = 25
rev1 = rev2-5 (cu 5 mai putine)
inlocuim rev1 in prima
rev2-5 + rev2 = 25
2rev2= 25+5
rev2 = 30/2
rev2 =15 => rev1 = 10
rev1 = rev2-5 (cu 5 mai putine)
inlocuim rev1 in prima
rev2-5 + rev2 = 25
2rev2= 25+5
rev2 = 30/2
rev2 =15 => rev1 = 10