Answer
$x=7$
Work Step by Step
Step 1. Let x represent one of the unknown quantities.
$x$ = the number
Step 2. Represent other unknown quantities in terms of x.
$2x$ = two times the number
Step 3. Write an equation in x that models the conditions.
$2x-3=11$
Step 4. Solve the equation and answer the question.
Add 3 to both sides:
$2x-3+3=11+3$
$2x=14$
Divide both sides by 2:
$x=7$
Step 5. Check the proposed solution in the original wording of the problem.
if $x=7$
$2x-3=11$
$2(7)-3=11$
$14-3=11$
$11=11$ -->TRUE
