Răspunsuri

2014-06-09T20:34:48+03:00
A-b=9

(a+b)-76=(a-b)

(a+b)=9+76
a+b=85

a-b=9
a+b=85
 adunam cele 2 ecuatii si obtinem
2a / =94
a=47

b=85-47
b=38
  • Utilizator Brainly
2014-06-09T20:35:04+03:00
A+b=76+9
a+b=85

a-b=9
a=9+b

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

a=9+38
a=47