x – 2y + z = 0
2x – 3y – 4z = –9
x + 2y – 5z = 0
How do I solve this. what method shoudl i use?

Question

x – 2y + z = 0 
2x – 3y – 4z = –9 
x + 2y – 5z = 0
How do I solve this. what method shoudl i use?

anonymous · Answer

ok this one requires more steps since there are three equations and so it will be more tedious.

anonymous · Answer

Step 1) Rearrange x - 2y + z = 0

anonymous · Answer

use crammer's method or system of linear equations where y = 27,x=36,z=18

anonymous · Answer

you can subtract first equation from third you get a "Y" and "Z" relation ;then multiply first equation by "2" then subtract it from second equation then you get another "Y" "Z" relation by solving 2 equations of 2 unkown  we get value of "Y" and "Z" then get "X" by subistitution :also we can use cramers method