how do i learn how to do this math ? I don’t know how to do it

Final answer:
Learning math requires practice and familiarity with different techniques. Start by playing around with a calculator and exploring different functions. Additionally, when solving math problems, identify the known and unknown variables and express the unknowns in terms of the knowns.
Explanation:
Learning math requires practice and familiarity with different techniques. Start by playing around with a calculator and exploring different functions like square roots, sine, exponentials, and logarithms. This will help you become comfortable with these concepts on your own terms. Additionally, when solving math problems, a helpful approach is to identify the known and unknown variables and express the unknowns in terms of the knowns.
By practicing regularly and using these tips, you can develop the skills and confidence needed to tackle math problems.
Answer:
Both angles measure 135 degrees.
Step-by-step explanation:
There is an image below showing my work. Sorry about the crinkled paper. You set both equations equal to each other and solve for x. You can then substitute x in for what you got. This will work for either equation. Since the equations are equal you only have to substitute it in for one equation but can do both.