Răspuns :
a-b=84
a+b=3*84=252
adunam cele 2 ecuatii si obtinem
2a=336
a=336/2=168
b=168-84=84
a+b=3*84=252
adunam cele 2 ecuatii si obtinem
2a=336
a=336/2=168
b=168-84=84