Math Problem Statement

The image contains a series of mathematical problems, including verification of solutions, solving equations, and inequalities.

Solution

It looks like you've uploaded an image with mathematical equations and problems in French, including some equations, inequalities, and tasks to solve or verify. How can I assist you with these questions? Would you like help solving specific problems or understanding certain concepts from the image?

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Math Problem Analysis

Mathematical Concepts

Equations
Inequalities
Algebra
Solving Systems

Formulas

Linear equations
Quadratic equations
Solving inequalities

Theorems

Basic algebraic properties
Properties of inequalities

Suitable Grade Level

Grades 8-10