Answer :
The expression is 3n - 11.
What is an expression?
One mathematical expression makes up a term. It might be a single variable (a letter), a single number (positive or negative), or a number of variables multiplied but never added or subtracted. Variables in certain words have a number in front of them. A coefficient is the number used before a phrase.
Let the number is n.
The according to the question:
Three times a number = 3n.
Then, less than 11,
3n - 11.
Eleven less than three times a number.
3n - 11.
Therefore, the expression is 3n - 11.
To learn more about the expression;
brainly.com/question/24242989
#SPJ6