Use gauss-jordan elimination to solve the following system of equations. 3x 5y = 7 6x − y = −8

Yasss

3x+5y=7
6x-1y=-8
so what you do is remove the placeholders ad put them in matrix form

so

eliminate one placeholder at a time

remember: first column=x, 2nd column=y, 3rd column=constant

let's eliminate x's
times first row by -2

add that to 2nd row

divide last row by -11


eliminate y's now
multiply last row by 10

add 2nd row to first row

divide first row by -6

divide last row by 10


1x=-1
1y=2

x=-1
y=2
(-1,2)

Distributive property

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