## Constants, Variables, Terms, Expressions, Equations and Integers

In this blog, I will explain Constants, Variables, Terms, Expressions, Equations, and Integers in detail.

### 1.Expressions and Integers : Constants

Constants are fixed numbers whose value does not change during solving of a problem. Any number like 1,2,3,4 etc. or values like **pi** doesn’t change while you solve any problem. Values like x, and y are not constants because if the value of x and y change. It can be any number.

### 2.Variables

Variables are numbers that changes whiles you solve the problem. Say x and y or square of x. Value of x can be 1 or 2 or 3 or anything. So the value is not fixed and keeps on changing. Meaning of vary = change.

Few examples of variables are x, y, z.

## 3.Terms:

A term is a single number or variable, or numbers and variables multiplied together. Say 6x where 6 is a constant/single number and x is variable so 6x is a term, 2 + 3, here 2 and 3 are single numbers. Together they form the addition of two terms.

A few Examples of terms are 5x, 7 times a number x, and a number x times one.

## 4.Expressions:

Expression in English consists of feelings connected with reactions. Feelings can be happy, sad, etc, in short, mixed feelings. Similarly, Expressions in math are mathematical statements that have a minimum of two terms containing numbers or variables, or both, connected by an operator* *in between.

A few Examples of expressions are 8 – x, and x – x.

## 5.Equations:

Equations are mathematical statements containing two algebraic expressions on both sides of an** ‘equal to (=)’ sign.** It contains the left-hand side(L.H.S.) and Right-hand side(R.H.S.). Both together forms equations.

Few Examples of equations are 3x + 4y = 10

## FAQ:

## 1.Is x a variable or a constant

Variable

## Is 25 a variable or a constant

Constant

## Is -25.2 a variable or a constant

Constant

## Is' a' variable or a constant

Variable

## Is 0 a variable or a constant

Constant

## Write algebraic expression for 7 times a number x

7x

## x times one

x

## The product of a number x and zero

0x

## 3 less than a number x

x – 3

## A number x minus 5

x-5

## The sum of 5 and a number x

x+5

## A number x increased by 10

x+10

## Four times a number x decreased by 2

4x-2

## Six times a sum of a number x and 4

6(x+4)

## 3 divided by a number x

3/x

## Evaluate considering x =5 and y =7, 3x + 2y

29