Răspuns :
a-b=84
a+b=84*3=252
a=b+84
b+b+84=252
2b=252-84=168 , deci b=84 iar a=168
a+b=84*3=252
a=b+84
b+b+84=252
2b=252-84=168 , deci b=84 iar a=168
a- b = 84 a = b + 84
a + b = 252
b + 84 + b = 252
2b = 252 - 84
2b = 168
b = 168 : 2
b = 84
a = 252 - 84
a = 168
a + b = 252
b + 84 + b = 252
2b = 252 - 84
2b = 168
b = 168 : 2
b = 84
a = 252 - 84
a = 168