-3x + 2 = -7 (given)
-3x = -9 (correct)
-3x/3 = -9/3 (incorrect, correct if -3x/-3 = -9/-3)
x = -3 (incorrect, if -3x/3 then -x = -3 not x = -3. From -x = -3 we need to do -x/-1 and -3/-1 which would be x = 3)
Answer:
in step 3 we forgot the negative sign so it is x=3
Step-by-step explanation: