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Equation vs. Expression

```
Date: 03/19/99 at 09:23:19
From: Jessica Sincebaugh
Subject: Algebraic Equation

I cannot find the definitions of a few terms. I think an algebraic
equation is a statement with two related quantities. But how is it
different from an algebraic expression?

Thank You.
```

```
Date: 03/19/99 at 11:32:28
From: Doctor Jon
Subject: Re: Algebraic Equation & Surface Area

An algebraic expression is like a word, and an equation is like a
sentence. For example 12c might represent a quantity of eggs. If c is
the number of cartons of eggs, and there are 12 eggs in each carton,
you can see that 12c is a useful way of expressing the total quantity
of eggs.

If you have another number or expression, you can relate them in an
equation. For example, let 12c = 60. This is an algebraic equation with
one variable. Solving this kind of equation reveals c = 5. Thus we have
five cartons.

Note the distinction of having 12c by itself (an expression) and relating
it to another number using an equals sign: 12c = 60 (an equation).

For a more precise definition, see if your textbook has a glossary, or
of these parts of your text, you should be able to find the kind of
definition that your teacher is looking for.

- Doctor Jon, The Math Forum
http://mathforum.org/dr.math/
```
Associated Topics:
Middle School Algebra

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