6y - 5 = 11
+5 +5
---------------
6y = 16
---- ----
6 6
Y = 2 4/6
Y = 2 2/3
So your goal is to get y all alone
Forst you would need to add 5 to both sides to get 6y = 16
Next you would need to divide both sides by 6 to get y = 2 4/6 which can be reduced down to 2 2/3