Supplimentary angles add upto 180 degrees.
Given that angle P is three times angle Q-4 then ;
Let angle P be 3(x-4) = 3x -12
Let angle Q be x
Applying the rule of supplimentary angles;
![3x-12+x=180](https://img.qammunity.org/2023/formulas/mathematics/high-school/sbr2e08j78h1riipuz586fzo8yj97eyhqq.png)
![4x-12=180](https://img.qammunity.org/2023/formulas/mathematics/high-school/yj1v05nl0zj72fh4i6n8r6el226imz9zoj.png)
![4x=180+12](https://img.qammunity.org/2023/formulas/mathematics/high-school/m17rkaf0y5chcm52srrwmsx2ojaipgn09v.png)
![4x=192](https://img.qammunity.org/2023/formulas/mathematics/high-school/27jwntx9odp72jqho155zflajlqkpcrita.png)
Divide both sides by 4 to get value of x in degrees
![x=(192)/(4)=48](https://img.qammunity.org/2023/formulas/mathematics/high-school/yiaktmi91gdpoh3ouol00rdf5prq2n64uq.png)
x= 48 degrees
Angle Q = 48 degrees
Angle P = 3x-12 = (3*48)-12 = 132 degrees