Answer:
6 x = 12
7 x = 10
Step-by-step explanation:
All angles in a triangle add to 180 degrees
6. 180 = 39 + 53 + 4 +7x = 96 + 7x
x = 12
7. 180 = 5x-75 +6x = 11x + 70
110 = 11x
x = 10
