Respuesta :

wanimation144

Answer:

multiply second eqyation by 9

Step-by-step explanation:

then subtract with 1 st eqn

bahadurkarkitej443

q9x-4y=19

9x=19+

1)x=19+4y/9

x+4y=19

2)x=19-4y

1 and 2

x=19+4y/9=x=19-4y