Respostas

  • Usuário do Brainly
2013-10-23T22:52:13-02:00
16+8y=3y+26
8y-3y=26-16
5y=10
    
y=10/5 y=2

20x-8=17x+1
20x-17x=1+8
3x=9
x=9/3
x=3
x²+y²= 3²+2² =9+4=13