We know that angle S is congruent to Angle L by the one line in the angle
Angle N is congruent to angle R by the two lines in the angle
That leaves angle M congruent to angle T
We can find the value of angle M since we know that the angles of a triangle add to 180
L + M + N = 180
65+ 55 + M =180
120+M = 180
M = 180-120
M = 60 degree
This means that T = 60 degrees
2x+30 = 60
Subtract 30 from each side
2x+30-30 = 60-30
2x= 30
Divide each side by 2
2x/2 = 30/2
x = 15
