Question

alin si vlad au impreuna 67 de timbre.alin spune:eu am cu 7 mai multe decat jumatate din cate ai tu.cate timbre are fiekare?

Answer 1

nr timbre alin=a
nr timbre vlad=b
a=7+b/2
7+b/2+b=67
=>b/2+b=60=> 3b/2=60 => b/2=20=> b=40 timbre
a=7+20=27