Question

alin si vlad au impreuna 67 timbre.alin spune eu am cu 7 mai multe decat jumatate din cat ai Tu.cate timbre are fiecare?

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

Answer 2

67-7=60
60:3=20
20+7=27(timbre Alin)
20ori2=40(timbre Vlad)