What you can do is two things: 1. Just fill in "y" with each answer choice until you get the right thing. 2. Do it the right way, which is this: You need to isolate "y". To do this, you first need to get rid of every number that doesn't have a variable with it, so you need to get rid of 3. In order to do this, you do the inverse operation of whatever you are doing. So, 3 is being divided by 4y, so the inverse operation of division is multiplication. You multiply on both sides of the equation. So you have: 3x3/4y=24x3 Finish multiplying, 3x3 cancels out, so you don't have anything left on top, so you have just 4y=72 because 24x3 is 72. Now you have: 4y=72 Now, in order to find "y", you need to do the inverse operation again, and this time, you do the inverse operation of multiplication, division. Your equation looks like: 4y/4=72/4 4y/4 cancels out, so your left with just ''y'', and 72 divided by 4 is 18, so you are left with: y=18 That is your final answer.