SOLUTION: Need help solving systems in three variable - x+y+z=57,-2x+y+=3,x-z=6

SOLUTION: Need help solving systems in three variable - x+y+z=57,-2x+y+=3,x-z=6

Algebra.Com

Question 902201: Need help solving systems in three variable - x+y+z=57,-2x+y+=3,x-z=6
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
From eq. 3,

Substitute into eq. 1,

Then from eq. 2,

Substituting,

Now working backwards,

and finally,

RELATED QUESTIONS
x+y+z=6 2x-y+z=8 x-2y-z=-19 I need help solving these systems of... (answered by MathLover1)

Need help solving system with three variables x + y + z = 0 2x+ 3y + 2z = -3 -x - 2y (answered by ikleyn)

Solving systems with three variables x-y-z=0 2x-y+z=5 y-2z=-5 Thank you!! (answered by richwmiller)

Solving linear systems in three variables by eliminating variables. x+y+z=4 x-y+4z=18 (answered by MathLover1)

i need help with matrices and systems of equations. [2 -1 1] [1 2 6] [3 -1 2]... (answered by stanbon)

*Solving systems of Linear Equations in Three Variables by Elimination* does anyone... (answered by stanbon)

I need assistance on solving systems of equations in three variables, by elimation. The (answered by checkley71)

I need help in solving this formula for x... (answered by CharlesG2)

I need to solve the following systems of three equations x+y+z=5 x-y+z=1 (answered by Fombitz)