Make Equation Release Gratis

Hi, I’m Rob. Welcome to Math Antics. In the last two Algebra videos, we learned how to solve simple equations that had only one arithmetic operation in them. But often, equations have many different operations which makes solving them a little more complicated. In this video, we’re going to learn how to solve equations that have just two math operations in them. …one addition or subtraction operation, and one multiplication or division operation. And the concepts you learn in this video will help you solve even more complicated equations in the future. Now as you might expect, equations that have two arithmetic operations in them are going to require two different steps to solve them. In other words, to get the unknown all by itself, you’ll need to ‘undo’ two operations. But that doesn’t sound too hard, right? I mean… we learned how to do undo any arithmetic operation in the last two videos. And that’s true. But there are a couple of reason that make two-step equations a little trickier to solve. The first is that there are a lot more possible combinations of those two operations. And the second is that, when there’s more than one operation, you have to decide what order to undo those operations in. Uh…hello! If you need to know what order to do operations in, just follow the Order of Operations rules! You DID watch that video, didn’t you? I sure did! But the Order of Operations rules tell us what order to DO operations… not what order to UNDO them! Uh…Well…then… could we REVERSE the order since we’re UN-doing operations? Now that’s a good idea. Well of course it is! When solving multi-step equations, that’s basically what we’re going to do. Using the Order of Operations rules in reverse can help us know what order to undo operations in, but it can be a little tricky actually putting it into practice. So… to see how it works, let’s start by solving a very simple two-step equation: 2x + 2 = 8. In this equation, the unknown value ‘x’ is involved in two different operations… addition and multiplication (which is implied between the first 2 and the ‘x’) And to undo those two operations, we need to use their inverse operations …subtraction and division. But the question is, which one should we do first? Like many things in life, the order we decide to do things in can make a big difference. Ah, come on! There’s gotta be an easier way! [voice from off screen] “First socks, then shoes.” Fortunately, in math, we have a special set of rules that tell us what order to do operations in. Those rules tell us to do operations inside parentheses (or other groups) first. And then we do exponent, and then multiplication and division, and last of all, we do addition and subtraction. Those are the rules you need to follow when simplifying mathematical expressions or equations. But solving an equation is different because we are trying to UNDO any operations that the unknown value is involved with so that the unknown value will be all by itself. So when solving...