Question

AYUDAAA!!
4x+5y=21
-4x+8y= -8​

Answer 1

Respuesta:

4x = 21-5y

-4x +8y =-8

-(21 -5y )+8y= -8

y=1

-4x+8x1 =-8

x=4

(x,y) (4,1)

4x4+5x1=21

-4x4+8x1=-8

21=21

-8=-8

(x,y) ( 4,1)