Final answer:
The question requires knowledge of algebra to compute values such as absolute value and to solve equations. It's a high school level math question involving concepts from algebra and physics.
Step-by-step explanation:
The question involves solving algebraic and mathematical problems that include components such as calculating absolute value, solving equations, and finding magnitudes of displacements. It appears to be related to various mathematical concepts likely covered in high school grades, including algebra and possibly physics (with reference to displacements). The question includes mathematical expressions and problem statements that involve computation and the application of formulas.