If you take Pre-Algebra or Algebra class, then you are probably going to have to study for your CST testing. Mine starts tomorrow. For some help studying, I'm going to go through a step-by-step process of solving the following equation: 2x-7 = 15. For some of you, this is a simple Algebra problem, and for others ( Shame on you if you are one of these people) this is a very difficult equation. Let's get started!

Alright, the equation is 2x-7 = 15. What does your gut feeling tell you to do? Get the x by itself! The first thing to do is to get rid of anything that is not directly effecting the x. What number is that? It's -7. So how are you going to put this number on the other side of the equation. You can't put -7 on the other side, so you just add 7 to both sides of the equation. -7+7=0, and 15+7=22. What do you do next? Well you have 2x=22. You have to do the opposite of what is happening to the x, so if it is being multiplied by 2, you're going to.... divide it by 2. You now have x by itself, and x=11! Good job! Now you're partially prepared for your CST's!

Alright, the equation is 2x-7 = 15. What does your gut feeling tell you to do? Get the x by itself! The first thing to do is to get rid of anything that is not directly effecting the x. What number is that? It's -7. So how are you going to put this number on the other side of the equation. You can't put -7 on the other side, so you just add 7 to both sides of the equation. -7+7=0, and 15+7=22. What do you do next? Well you have 2x=22. You have to do the opposite of what is happening to the x, so if it is being multiplied by 2, you're going to.... divide it by 2. You now have x by itself, and x=11! Good job! Now you're partially prepared for your CST's!