First Step -- Get rid of the -2!
-2 -3y = -7
+2 +2
_________
-3y = -5
Second Step -- Divide by -3 to find what y equals!
-3y = -5
__ __
-3 -3
_______
y = -5
__
-3
Final Step -- Reduce to simplest form to find your answer!
-5 5
__ = __ = 1 and 2/3
-3 3