SOLUTION: A) -4 -3 -4Z = 1 -5 +1Y +2z =-34 5X -1Y = 28 B) 5X +5Y -1z =21 3X -2Y -4Z =48 4X -4Y -1Z =42

Algebra ->  College  -> Linear Algebra -> SOLUTION: A) -4 -3 -4Z = 1 -5 +1Y +2z =-34 5X -1Y = 28 B) 5X +5Y -1z =21 3X -2Y -4Z =48 4X -4Y -1Z =42      Log On


   

Question 59083: A) -4 -3 -4Z = 1
-5 +1Y +2z =-34
5X -1Y = 28

B) 5X +5Y -1z =21
3X -2Y -4Z =48
4X -4Y -1Z =42
Answer by checkley71(8403) About Me  (Show Source):
You can put this solution on YOUR website!
-4-3-4Z=1
-4Z=1+4+3
-4Z=8
Z=8/-4
Z=-2 THEN
-5+Y+2*-2=-34
-5+Y-4=-34
Y=-34+5+4
Y=-34+9
Y=-25 THEN
5X-1*-25=28
5X+25=28
5X=28-25
5X=3/5
X=3/5