the product of a number and 15 is not less than 15 The phrase a number means an arbitrary variable. Let's call it x. x the product of a number and 15 means we multiply x by 15 15x The phrase not less than means greater than or equal to. We set 15x greater than prequel to 15 15x >= 15 <-- This is our algebraic expression If the problem asks you to solve for x: Divide each side by 15: 15x/15 >= 15/15 x >= 1
