Question

5x+10y=-5 -5x+5y=-10

Answer 1

Resposta:

Explicação passo-a-passo:

5x+10y=-5

-5x+5y=-10

__________

0 +15y=-15

y=-15/15

y=-1

5x+10y=-5

5x+10.(-1)=-5

5x-10=-5

5x=-5+10

5x=5

x=5/5

x=1