One half of the cube of k

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

What other information do you need to prove triangle dac=bca by asa

1) in triangle the, what is the measure of angle t (in degrees)? 2) in triangle bat, the measure of angle b is 66∘, and the measure of angle t is 77∘.what is the measure of the exterior angle at a (in degrees)?