Answer:
15
Step-by-step explanation:
First is 14.4
Second I’m not sure
30
factors of 6: 6 12 18 24 30
factors of 5: 5 10 15 20 25 30
so its 30
or simply multiple the denominators 6×5=30
Because they are supplementary angles, their sum is 180°.
∠b = 180° - 81°
∠b = 99°