11y -3x = 8
-3x = -16y + 33
Rearrange these as
-3x + 11y = 8
-3x + 16y = 33 subtract te second equation from the first
-5y = -25 divide both sides by -5
y = 5
And we can find x by using
-3x + 11(5) = 8
-3x + 55 = 8 subtract 55 from both sides
-3x = -47 divide both sides by -3
x = 47/3