GEOMETRY (will mark as brainliest) Also please explain how you got your answer I’m failing it lol

17

Step by Step:
When finding the triangle’s angles you have to know the measure of a triangle which is 180 degrees and will apply to all types of triangles. Having to say that, you have all equations and have to put them all together to equal 180 degrees, so it will be 6x + 10 + x + 17 + 4x - 34 = 180 then you combine like terms to have 11x - 7 = 180 then add 7 to both sides so it will be 11x = 187 and then divided 11 to both sides as well to have only x = 17