awisner51 awisner51

11-11-2021
Mathematics

contestada

x=2y=-1
-5x-9y=2
elimation

Respuesta :

silirobert15 silirobert15

11-11-2021

Answer:

Step-by-step explanation:

We know x=2y=-1

So -5x-9y=2

<=> -5(1) +(-4)(1) - (y) =2

<=> -9- (y)=2

<=> y=-9-2

<=> y=-11

P/s: -9y= -8y-y = -4x-y = (-4)(1)-y

ok, i'm done. Thank to me :>

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