Can someone Please help :(

Plz heeeeeeelp plz give me the answer

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

(05.03 mc) part a: explain why the x-coordinates of the points where the graphs of the equations y = 4x and y = 2x−2 intersect are the solutions of the equation 4x = 2x−2. (4 points) part b: make tables to find the solution to 4x = 2x−2. take the integer values of x between −3 and 3. (4 points) part c: how can you solve the equation 4x = 2x−2 graphically? (2 points)