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OpenStudy (gabyramirezzz):
Solve the system of three linear equations
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OpenStudy (gabyramirezzz):
E1: x-4y+z=5 E2:4x+2y+z=2 E3:-4x+y-3z=-8
pooja195 (pooja195):
Any ideas on where to start?
OpenStudy (gabyramirezzz):
first i did -1*E1+E2
OpenStudy (gabyramirezzz):
to eliminate z from each equation
OpenStudy (loser66):
yup, what do you get from -E1 + E2?
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OpenStudy (gabyramirezzz):
wait im sorry i just figured out what i did wrong! i forgot to put a negative sign when i was plugging in all of my variables!
OpenStudy (gabyramirezzz):
im sorry thank you so much, the answers are x=1/3 y=-2/3 and z=2
OpenStudy (loser66):
ok.
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