Geometry

Question Analysis:
This algebra-geometry hybrid question requires solving for two variables using congruent triangle properties.

Key Concept Explanation:
Corresponding sides of congruent triangles are equal, allowing setup of multiple equations to solve for variables.

Step-by-Step Solution:
From △ABC ≅ △DEF:
AB ≅ DE ⇒ 2x + 3 = 11 ⇒ 2x = 8 ⇒ x = 4
BC ≅ EF ⇒ 5y - 1 = 14 ⇒ 5y = 15 ⇒ y = 3
Solution: x = 4, y = 3

Common Mistakes:
Solving only one equation correctly.
Mixing up which variables correspond to which sides.
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