Math Problem Statement
Solution
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Math Problem Analysis
Mathematical Concepts
Algebra
Geometry
Systems of Equations
Formulas
Sum of interior angles in a quadrilateral: 360°
Equation setup: 3x + 2y + 4y + (5x - 20) = 360
Theorems
Sum of angles in a quadrilateral equals 360 degrees
Suitable Grade Level
Grades 9-11