You can put this solution on YOUR website! If you are trying to find the number,this should be set up as an equation
Let n = a number
7 less than 2 times a number is set up as 2n-7
we are told that 2n-7 = 19
Solve for n
2n-7 = 19 - add 7 to both sides
2n = 26 - divide both sides by 2
n = 13