How to Solve Equations

Equation: Two numbers or expressions that have the same value

Variable: A letter that represents a number that can very

An equation is like a balance that you have to keep balanced. Whatever you do to one side of the equals sign, you have to do to the other.When you solve an equation, the main thing you are trying to do is get the variable by itself.

example:

5+x=30

-5 -5

x=25

You probably have no idea what the example means, so I'll talk you through it. the problem was

5+x=30. We are trying to get the x by itself, so we don't want the 5. Plus 5 minus 5 equals 0, so you subtract 5 from both sides(whatever you do to one side you have to do to the other). After you subtract 5 from 30, you fave the answer- x=25. I'll do another example and hopefully this one will make more sense.

example:23-n=13

+23 +23

n=36

You're probably wondering why it's +23 instead of -23 like before. The reason is that you always do the opposite operation from what is in the equation. Minus 23 plus 23 equals 0. 13+23 equals 36 so n=36.

Checks

A check is exactly what it's name suggests- it checks your answer to an equation. All you have to do in a check is plug the answer into the equation and solve it.

example:23-n=13

23-36=13

13=13

n=36

As you can see, I checked the last example and it turned out to be right.

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