SOLUTION: Solve using REF
x-y-2z=0
-2x+5y+10z=-3
3x+y=0
Algebra.Com
Question 126485: Solve using REF
x-y-2z=0
-2x+5y+10z=-3
3x+y=0
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!
………………………………(1)
……………………….(2)
………………………………..(3)
---------------------------------------------------------------
………………………………(1)…=>
………………plug into (2)
……………………….(2)
………………………(I)
Now plug into (3)
………………………………..(3)
…………………………..(II)
subtract (II) from (I) to solve for
………………………(I)
…………………………..(II)
-----------------------------------------------------------
………………………………..(3)…plug in and find
………………………………(1)….. plug in and , then find
Check:
………………………………(1)
……………………….(2)
………………………………..(3)
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