How do you solve using gaussian elimination or gauss-jordan elimination, -2x-5y=-15−2x−5y=−15, -6x-15y=-45−6x−15y=−45?

1 Answer
Guillaume L.
Mar 19, 2018

color(red)(x)=(-3y/2)+(15/2)x=(−3y2)+(152)

Explanation:

[0]-2x-3y=-15,-6x-9y=-45−2x−3y=−15,−6x−9y=−45
[1]-2x=3y-15,-6x-9y=-45−2x=3y−15,−6x−9y=−45
[2]color(red)(x)=(-3y/2)+(15/2),-6x-9y=-45x=(−3y2)+(152),−6x−9y=−45
[3]color(red)(x)=(-3y/2)+(15/2) ,-6((-3y/2)+(15/2))-9y=-45x=(−3y2)+(152),−6((−3y2)+(152))−9y=−45
[4] color(red)(x)=(-3y/2)+(15/2), 9y-45-9y=-45x=(−3y2)+(152),9y−45−9y=−45
[5]color(red)(x)=(-3y/2)+(15/2), -45=-45x=(−3y2)+(152),−45=−45
The best you can have is so a function of x and y.

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