We have two numbers:
x and 8
And we have this equation:
3 (1/3x + 8) = 11
Solving the parenthesis, we have:
3 * 1/3x + 3 * 8 = 11
3/3x + 24 = 11
x + 24 = 11
Subtracting 24 at both sides:
x + 24 - 24 = 11 - 24
x = -13
Let's prove it on the equation we wrote:
3 (1/3 * - 13 + 8) = 11
3 (-13/3 + 8) = 11
Solving the parenthesis:
- 39/3 + 24 = 11
-13 + 24 = 11
11 = 11
The solution is correct, x = -13.