Respuesta :

stricklama
5x-2y=3
-5x+4y=9

2y= 12
divide it by 2

y= 6


put y in any equation

5x-2 (6)=3

5x-12=3
5x= 3+12=15
divide by 5
x=3

y= 6
suspho

(5x - 2y) + (-5x + 4y) = 9 + 3

-2y + 4y = 12

2y = 12

y = 12 : 2

y = 6