Answer:
x = 22°
Explanation:
Given corner URV = x and because of symmetry of Z-corners, that corner by definition is the same as corner DVR.
So corner SVR = V = x
R = 44°
S = 5x + 4°
V = x
In any triangle the three corners add up to 180°
Combine all this info and you get:
44 + 5x + 4 + x = 180
Solve for x (means write as x =...)
5x + x = 180 - 4 - 44
6x = 132
x = 132/6
x = 22°