In isosceles triangle RST below what is the value of y

Answer:
y=71
Step-by-step explanation:
The sum of the angles in a triangle is 180
y+y+ 38 = 180
Combine like terms
2y+38 = 180
Subtract 38 from each side
2y+38-38 = 180-38
2y =142
Divide each side by 2
2y/2 =142/2
y= 71