Răspuns :
1/2din suma =168 s/2=168 s=168x2=336
a+b=336 a=336-b
a-b=168 a=168+b
336-b=168+b
336-168=b+b
168=2b
b=168:2
b=84
a=84+168=252
a+b=336 a=336-b
a-b=168 a=168+b
336-b=168+b
336-168=b+b
168=2b
b=168:2
b=84
a=84+168=252
a-b = 168 ; 168 x2 = 336 ; a+ b = 336 ; adun diferenta si suma una sub alta si vom avea 2a = 504 ; a = 504:2= 252 ; b = 336-252 = 84 ;
