Question

2x+y=-9 x+6y=1como eu resolvo isso ​

Answer 1

Resposta:

2x+y=-9 (l)

x+6y=1 (ll)

(l)2x+y=-9

y=-9-2x

(ll) x+6y=1

de (l) x+6(-9-2x)=1

x-54-12x=1

-11x=55

x=-5

(l)y=-9+10

y=1

S(1,-5)