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Question about Linear Systems: Resolution

Mathematics

Originais Teachy

Linear Systems: Resolution

Medium

(Originais Teachy 2023) - Question Medium of Mathematics

During a math competition, one of the challenging problems involved solving a system of linear equations. The challenge was to solve the following system of equations: \begin{cases} 2x - 3y + 5z = 20 \\ x + 4y - 2z = -8\\ 3x - 2y + z = 7 \end{cases} using Cramer's rule. How could you determine the values of x, y, and z?
a.
x = 2, y = 5, z = 3
b.
x = 5, y = 2, z = 3
c.
x = 3, y = 5, z = 2
d.
x = 2, y = 3, z = 5
e.
x = 3, y = 2, z = 5

Answer sheet:

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