We know: The sum of measures of angles in the triangle is equal 180°.
x - the measure of the second angle
2x - the measure of the first angle
x - 8° - the measure of the third angle
The equation:
[tex]2x+x+x-8=180\\\\4x-8=180\ \ \ \ |+8\\\\4x=188\ \ \ \ |:4\\\\x=47[/tex]
Answer:
[tex]2x=2\cdot47^o=94^o\\\\x=47^o\\\\x-8^o=47^o-8^o=39^o[/tex]