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Therefore the number of storybooks Amanda has = y + 10Ģ. Let the number of storybooks Alex has = y Express the number of storybooks Amanda has in terms of the number of storybooks Alex has. The rules are that variables are to be represented with alphabetic letters, say lower case a-z and constants in numeric form.

Now we will see how to frame an algebraic expression. Framing algebraic expressions with given conditions For example, the date of birth of a particular person, the normal human body temperature and capacity of a given container. The value remains fixed for specific numbers that represent quantities or ideas that will not change.

The age of people keeps on increasing year by year.

The height of a growing child changes with time.

The temperature in different places also change.

The picture and the list below show some real-life examples, where the value of a variable changes with the change in place and time. VariableĪ variable is a number that does not have a fixed value. Thus n + 1 is the algebraic expression formed with n as variable and constant 1. So ‘n’ is an example for a variable that can take any value 1,2,3… so on. Here n represents the position of the column.

The number of marbles used in a column = n + 1. Thus we observe that every new column increases by 1 marble. Here we see that the first column has 2 marbles, the second column has 3 marbles, the third column has 4 marbles and so on.

The more basic parts of algebra are called elementary algebra, and the more abstract types are called Abstract Algebra or modern algebra. Algebra is a part of mathematics that deals with symbols and the standards for controlling those symbols.