Respuesta :
[tex]x + 7 > 11 \\ x > 11 - 7 \\ x > 4[/tex]
[tex]11 + 7 > x \\ 18 > x \\ x < 18[/tex]
[tex]4 < x < 18[/tex]
The possible values of x are: x < 18.
Triangle inequality says: The sum of two sides of a triangle is more than the third side of the triangle.
It means 7 + 11 > x
Or, 18 > x.
Or, x < 18.
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