How To Write Algebraic Expressions 
In mathematics, algebra
is where we use letters or symbols to represent unknown numbers Variable: A variable is a symbol, usually a letter used to represent a number. Any letter may be used as a variable. We use algebra to translate words into mathematics. For example suppose we use the variable n to represent any unknown number we do not know in the following sentences. 1) a number plus 3 becomes n + 3 2) four times a number becomes 4n 3) three less than a number becomes n3 4) eight more than a number becomes 8 + n 5) Sally is four times as old as James less three years In the above problem we let n=James’s age so 4n3=Sally’s age To write multiplication using variables always put the multiplier (number) before the variable. Example: 4n
correctly means 4 times n
