Answer:See BelowStep-by-step explanation:We are given 3 equations. 3x + 85x - 20and5x + 4yFirst lets solve for x using the first two3x + 8 = 5x -20Move the variables to one side3x + 8 = 5x -20-3x -3x8 = 2x -20+20 +2028 =2x28/2 =2x /214 = x Now we have x = 14Lets plug this into the second equation to solve for the angle3(14) + 842 + 8 = 50 5(14) - 2070 - 20 =50Now, lets plug the x and the angle into the third equation to find y5 (14) +4y = 50 70 + 4y = 50-70 -704y = -204y/4 = -20/4y = -5So now we have:x = 14y = -5and the angle = 50Hope this helps!