How do you write the following as an algebraic expression using x as the variable: The sum of a number (n) and ten?
An expression is just a maths sentence.
The word 'sum' means we are adding.
"The sum of 2 and 7" would be written as '2 + 7'
In this case we are working with a number whose value we do not know, but we just call it 'n'.
"The sum of