D

Step 5: [Original equation.]7y - 2 = y + 10

Step 6: [Subtract y from each side.]7y - 2 - y = y + 10 - y

Step 7: [Combine like terms.]6y - 2 = 10

Step 8: [Add 2 to both sides.]6y - 2 + 2 = 10 + 2

Step 9: [Combine like terms.]6y = 12

Step 10: [Divide each side by 6.]6y6 = 126

Step 11: [Simplify.]y = 2