I need help with this.

Answer:
1. m < A + 30 + 90 = 180
m < A = 60
2. m < B + 30 + 80 = 180
m < B = 70
3. m < P + 30 + 110 = 180
m < P = 40
4. m < R + 30 + 105 = 180
m < R = 45
Step-by-step explanation:
1. 180 - 120 = 60
2. 180 - 110 = 70
3. 180 - 140 = 40
4. 180 - 135 = 45
Add the two numbers that are given together, then subtract the sum from 180. The difference = the variable
I know this is kinda late ;-;