help me PLease
also explain how to do it

❥[tex]\Large\pmb{ \underline {\tt Answer}}[/tex]
So we can only find x if other two angles of triangle is given.
In angle B as u can see boxed shape angle is there then it probably means it's a 90° angle.
We know sum of angles of triangle = 180°
{Reson :-
There's a formula to fund sum of angles of figure
}
Now Let's proceed
[tex] \boxed{ \rm Side_1+Side_2+Side_3 = 180\degree}[/tex]
Fill all the given values
[tex] \dashrightarrow \tt 90 \degree + 55 \degree + c = 180 \degree[/tex]
[tex] \\ \\ [/tex]
[tex] \dashrightarrow \tt 145\degree + c = 180 \degree[/tex]
[tex] \\ \\ [/tex]
[tex] \dashrightarrow \tt c = 180 \degree - 145\degree[/tex]
[tex] \\ \\ [/tex]
[tex] \dashrightarrow \tt c = 35\degree[/tex]
[tex] \\ \\ [/tex]
Value of x = 35°
~BrainlyVIP ⸙