Question

solve this
and give only the answer
in∆RST what is the value of x​

Answer 1

Answer:

100°

Step-by-step explanation:

140+a+b = 180

a+b = 40

x+a+a+b+b=180

x+2(a+b) =180

x+2*40=180

x+80=180

x=100°