Răspuns :
a + b = 48
a - b = 30 → a = 30 + b
____________
a , b = ?
30 + b + b = 48
2b = 48 - 30
2b = 18
b = 18 : 2
b = 9
a = 30 + 9
a = 39
Succes !! :)
a - b = 30 → a = 30 + b
____________
a , b = ?
30 + b + b = 48
2b = 48 - 30
2b = 18
b = 18 : 2
b = 9
a = 30 + 9
a = 39
Succes !! :)