Step-by-step explanation:
A e f=180-100
=80
Efd= 360-80-100-40-35
=105
answer 60°
solve:180°-(60°+60°)
180°-120°
60°##
Answer:
let Elijah age be a
Then
2*a + 17 =47
2a=47-17
2a=30
a=15
