Answer:
x = 15 degrees
Step-by-step explanation:
Sum of the angles in a triangle = 180
angle 1 = 3x+7
angle 2 = 63
angle 3 = 180 - (5x + 50)
Therefore
3x+ 7+ 63+ 180- 5x- 50 = 180
-2x + 210 = 180
subtract 210
-2x = -30
divide by -2
x = 15
