mohon bantuannya ya. terima kasih

( -2x+12_6y ) = (8__6)
( 2+4___2y ) = (6__x)

-2x+12 = 8
-2x = -4
x = 2

6y = 6
y = 1

x-y = 2-1 =1

ket:_=spasi

semoga membantu