SOLUTION: HAVING A PROBLEM WITH THIS SYSTEM OF EQUATIONS. NOT SURE I HAVE DONE IT RIGHT. X+2Y+Z=2 5X=Z Y=-2X

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Question 262622: HAVING A PROBLEM WITH THIS SYSTEM OF EQUATIONS. NOT SURE I HAVE DONE IT RIGHT.
X+2Y+Z=2
5X=Z
Y=-2X
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
X+2Y+Z=2 ----1
5X=Z --------2
Y=-2X---------3
substitute the value of z in eq 1
x+2y+5x=2
6x+2y=2 ----a
y+2x=0 ---------3
multiply eq. 3 by 2
2y+4x=0 ---------b
solve equation a & b for x subtract b from a
2x=2
x=1
apply for y and z