PLEASE HELP. I DONT GET THIS AT ALL. Plaese explain also

x= 22
∠SVR = ∠VRU = x ( corresponding angles )
the sum of the angles in a triangle = 180° thus
5x + 4 + x + 44 = 180
6x + 48 = 180 ( subtract 48 from both sides )
6x = 180 - 48 = 132 ( divide both sides by 6 )
x = [tex]\frac{132}{6}[/tex] = 22