Răspunsuri

2014-06-04T15:08:53+03:00
D - diferenta
s- suma

d=9
s=76+9
s=85

a+b=85
a-b=9=>a=9+b

9+b+b=85
2b=85-9
2b=76
b=76:2
b=38

a=9+38
a=47