Answer:
Step-by-step explanation:
∠a + 40 + 48 = 180 {Straight line angles}
∠a + 88 = 180
∠a = 180 - 88
∠a = 92°
92 + 47 + ∠x = 180 {angle sum property of triangle}
139 + ∠x = 180
∠x = 180 - 139
∠x = 41°
