what is x, how to find it and what is the converse

Answer:
Explanation:
Here, we want to get the value of x
Mathematically, the sum of opposite interior angles equal the exterior angle on the third vertex
We have this as:
[tex]\begin{gathered} 16x\text{ + 48 = 28x} \\ 28x-16x\text{ = 48} \\ 12x\text{ = 48} \\ x\text{ = }\frac{48}{12} \\ x\text{ = 4} \end{gathered}[/tex]Converse: In a triangle, the exterior angle is equal to the sum of opposite interior angles