Many people know that there are connections between math and science. But how? They are two different things with different names. Well, in science, there are a lot of formulas. There are also a lot in math. So that is one example of a connection between the two. There are also a lot of theories involved in science; math has that too. If you want to find something out using a formula, that involves science and math. Science and math have basic fundamentals. It is kind of hard to explain something that we are used to. Basically, they are both the same.

Another example of how these two subjects are connected involve solving things in math and science. In science, you use a lot of math to figure out scientific problems. So that's why it is important to understand math when doing science, especially in chemistry.

What are negative numbers and what are they used for? Well, you should know what negative numbers are by now, but incase you didn't, negative numbers are numbers below zero. Although it is below zero, it starts with negative one. A negative number is represented by a minus sign in front of the number. So what's its purpose? A negative number is used to represent anything below zero. For example, it can be seen in the weather forecast. If it's really really really blazing, cold, the temperature could be -1 degrees, because that is pretty cold!

I have seen most negative numbers in equations. For example, while I was learning how to add and subtract negative integers, I learned that you can't subtract negative integers. When you subtract negative integers, you must change the operation to addition, and change the integer into a positive one.

Our post today is explain the steps of solving the problem, 2x-7=15. This problem is an example of an multi-step equation because it involves more than one operation. Well anyway, the whole objective of the problem is to solve for x. The first thing you would do is add seven to the answer (15) and to itself (7). The reason why you would add the seven to both sides is because you have to get rid of it in order to have x by itself. It is in addition because you are doing the opposite of subtraction. Once you do that, the problem should now be, 2x=22.

Before it was simplified, it was difficult to solve right? Now that it's simplified, you can easily solve it now. 2x=22. You divide 2 on both sides. So that means, you would put a line beneath 2x and 22 and have 2 under it. The line represents division. Once you do that, you are left with x and the answer. If you did this correctly, you should have gotten 11 as "x" because two times 11 equals 22.