7y = y - 42? Show work and check

7y = y - 42
6y = -42
y = -7

Add y to both sides and get
8y=-42 then you divide both sides by 8 and get
y=5.25

to check just do 7*5.25=5.25-42 (:

7y = y -42
-y -y

6y = -42

6y/6 = -42/6

y = -7