An expression is a group of mathematical symbols representing a number or quantity. Some examples. An equation is a mathematical statement that shows that two expressions are equal. It always includes an equals sign.
Use this exercise to make sure you understand the difference. The way I read your post they are the same thing. Thanks, John. There is usually just one solution, but sometimes there is more than one solutuion. A formula is a method of working something out that will work for all the possible values.
This always works no matter how big or small the length and width are. Hope this makes sense! You must be logged in to post a comment. By mzatanoskas , November 12, in Mathematics. I'm looking at the wikipedia page on equations. But I'm getting a little confused by the different use of the terms equality, equation and identity in different situations.
An identity is equation that is true regardless of the variables involves. An equality is true only because of the constants in that particular instance. Just to check though, equalities can only feature constants? You need to be a member in order to leave a comment.
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