Step 3. Let 2n+3 be twice the same number plus three more.
Step 4. Then n+2=2n+3 since the sum of a number and two is three more than twice the same number.
Step 5. Solving equation in Step 4 yields the following steps.
Subtract n+3 from both sides the equations
Check...n+2=2n+3 or -1+2=2*(-1)+3 is a true statement.
Step 6. ANSWER: The number is -1.
I hope the above steps were helpful.
For FREE Step-By-Step videos in Introduction to Algebra, please visit http://www.FreedomUniversity.TV/courses/IntroAlgebra and for Trigonometry visit http://www.FreedomUniversity.TV/courses/Trigonometry.