Answer:The difference between 19 and 8 is 11.Step-by-step explanation:Given:The difference between a number and 8 is 11Find the number.Solution:Let the unknown number be [tex]=x[/tex]The difference between the unknown number can be written as:[tex]x-8[/tex]We are given that the difference =11So we can write the equation to find [tex]x[/tex] as :[tex]x-8=11[/tex]Using additive property to solve for [tex]x[/tex]Adding 8 to both sides to isolate [tex]x[/tex] on one side.[tex]x-8+8=11+8[/tex]∴ [tex]x=19[/tex]∴ The unknown number = 19