Răspuns :
a-b = 60
b=a×4
a=? b =?
a |-----|-----|-----|-----|
b |-----|
60 : 3 = 20 (b)
20 ×4 = 80 (a)
Proba : 80 - 20 = 60 ( a-b).
b=a×4
a=? b =?
a |-----|-----|-----|-----|
b |-----|
60 : 3 = 20 (b)
20 ×4 = 80 (a)
Proba : 80 - 20 = 60 ( a-b).