Răspunsuri

  • Utilizator Brainly
2014-07-09T12:25:33+03:00
A+b=72
a-b=48⇒a=48+b

48+b+b=72
2b=72-48
2b=24
b=12

a=48+12
a=60

Verificare : 60+12=72
2014-07-09T12:28:13+03:00
A+b=72
a-b=48 si rezulta ca b=a-48
a+a-48=72
2a-48=72
2a=24 si a=12
12+b=72 si rezulta ca b=72-12  si b=60
1 5 1