Răspunsuri

  • Utilizator Brainly
2014-03-02T20:08:15+02:00
x varsta tatalui; y varsta mea ⇒ x-10=7(y-10); x+15=2(y+15);
x-10=7y-70, x=7y-60;
x+15=2y+30, x=2y+15 ⇒ 7y-60=2y+15 ⇒ 5y=75, y=15, x=2y+15, x=45
Solutie: tata are 45 de ani, eu am 15 ani.