Tentukan Nilai a + b nya! Tolong Pake caraaa!!please!!!

4a - 3 + 275 = 360
4a + 272 = 360
4a = 360 - 272
4a = 88
a = 22

4a - 3 = 4.22 - 3
= 88 - 3
= 85°
180 - 85 = 95°

3b + 44 = 95
3b = 95 - 44
3b = 51
b = 17

a + b = 22 + 17
= 39°