SAT Math Multiple Choice Practice Question 513: Answer and Explanation
12. If 4y + 8 = 12y + 24, then y =
Correct Answer: A
A To solve for y, you should start by moving all the y's to one side of the equation. If you subtract 4y from each side, you get 8 = 8y + 24. Now subtract 24 from each side of the equation, to give you –16 = 8y. Finally, you should divide each side by 8, which gives you –2 = y.