An expression in math would be considered as a statement that will use numbers, variables or in some cases both. In order to write a math expression given out in a math problem one has to interpret the text very well.
Examples of Math Expressions
Given below are some examples of mathematical expressions:
$7 + 3x$
If one person is older than the other by 6 years, then the math expression for the person would be $6 + p$
A math expression is a collection of one or more terms, which are separated by the signs ( + , - , x , / ).
Example : $8 + b$ or $a - 3$
In algebra, an equation is a mathematical statement with two expressions where, each expression is separated by an equal (=) sign. Variables can be present on both the sides of the equality (=) sign and we use letters to denote such variables.
Example 1: $x = 4 + 2$ , [Here, we can observe that the variable is present only on one side of the equation].
Example 2: $2x + 3 = x + 4$ , [Here, we can observe that the variables are present on both side of the equation].
We usually simplify math expressions to get a normal result. If the expression contains a parenthesis, we often use the distributive property rule to remove these parenthesis and for combining similar terms.