Question

Two times a number plus four is 22. What is the number

Answer 1

2n + 4 = 22
      -4   -4
    2n = 18
   n=9

Answer 2

Use the expression to solve for the number.

2n + 4 = 22
2n = 22 - 4
2n = 18
n = 18/2
n = 9

The number is 9.

Hope this helps :)