8x + 3y = 27
2x - 5y = 1 (-4) multiply everything by a negative 4 you get:
-8x + 20y = -4 now the x's cancel you you end up with
23y = 23 divide each side by 23
y = 1
now take y=1 and plug it into either equation,
8x + 3(1) = 27
8x + 3 = 27 subtract 3 from both sides
8x = 24 divide 8 by both sides
x= 3
x = 3 y=1