Answer:
Problem 1:
Using the Triangle Angle Sum theorem, we can write an equation for question 1
47 + 58 + x = 180
105 + x = 180
105 - 105 + x= 180 - 105
x= 75
Problem 2:
Use the Triangle Angle Sum theorem.
96 + 21 + x = 180
117 + x = 180
117 - 117 + x = 180 - 117
x = 63