Răspunsuri

2014-09-21T10:49:57+03:00
A= b+18
2a+b= 873
2(b+18)+b= 873
2b+36+b=873
3b= 873 -36
b=837: 3
b= 279
a= 279 + 18= 297...
  • Utilizator Brainly
2014-09-21T10:51:13+03:00
A+b=?
a=b+18
2a+b=873⇒2*(b+18)+b=873⇒2b+36+b=873⇒3b=837⇒b=279

a=b+18
a=279+18
a=297

a+b=297+279=576
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