Answer:
[tex]x < - 9[/tex]
Step-by-step explanation:
We can only find the range of the values of x by using triangle inequality,
[tex]x + 1 + x > 3x + 10 \\ \\ 1 - 10 > 3x - 2x \\ \\ - 9 > x[/tex]
Multiply through both sides by -1, we get,
[tex]x < - 9[/tex]
This means x = -10, -11, ... (which is not realistic because a side of a triangle cannot be a negative number)