Using Cramer’s Rule, what are the values of x and y in the solutio -2x+3y+Z = 7 -4x-y-2z = 15 X+ 2y + 3z=-7 x=-3, y=

Question

Using Cramer’s Rule, what are the values of x and y in the solutio
-2x+3y+Z = 7
-4x-y-2z = 15
X+ 2y + 3z=-7
x=-3, y=1
0
X = 1, y=-3

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Autumn 2 weeks 2021-09-08T16:12:17+00:00 1 Answer 0

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    0
    2021-09-08T16:14:06+00:00

    Answer:

    x = -3, y = 1

    Step-by-step explanation:

    To find the value of x and y, find the determinant of original matrix, which would be 21.

    Then, substitute the value of x with the solutions to the equations and find the determinant of that matrix, which is -63.

    Cramer’s rule says that Dx ÷ D is the value of x. So, -63 ÷ 21 = -3.

    So, the x-value is -3.

    You can find the determinant of the y-value in the same way, and you’ll find out that y = 1.

    Hope this helped! 🙂

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