Răspunsuri

  • Utilizator Brainly
2014-02-28T20:56:02+02:00
A-b=477
a=12b+15 ⇒ 12b+15-b=477, 11b=462, b=42
a=b+477, a=519
5b=3c ⇒ c=5b/3=70
a+b+c=631.
2014-02-28T20:58:14+02:00
A=b*12+15
Stiu ca a-b =477
12*b+15-b=477
11*b=477-15=462
b=462:11=42
a=477+42=519
42*5=c*3 ⇒c=70
a+b+c=519+42+70=631