vanna21 vanna21

04-08-2017
Mathematics

contestada

Use Gauss-Jordan elimination to solve the following system of equations. 3x + 5y = 7 6x − y = −8 A. x = 2, y = 1 B. x = 5, y = 6 C. x = 3, y = −1 D. x = −1, y = 2

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ghanami ghanami

04-08-2017

hello :
(-1, 2) verifies the 2 equations Answer D
because :
3(-1)+5(2) = 7...right
6(-1)-(2) = -8...... right

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