I need help with this.

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 ;-;