in triangle abc angle b is 3 times angle a and angle c is 8degrees less than 6 times angle a?

a = X deg., b = 3X deg, c = 6X-8 deg.

a + b + c = 180 deg., X+3X+(6X-8)=180
Solve for x: X=18.8=a, b=3X=56.4
c=6X-8=104.8.