anonymous
  • anonymous
X-2Y=-1 3X+2Y=5 2X-4Y+Z=-1 SOLVE BY ADDITION
Mathematics
chestercat
  • chestercat
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anonymous
  • anonymous
CAN U PLEASE SHOW WORK?
anonymous
  • anonymous
nvm
anonymous
  • anonymous
?

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anonymous
  • anonymous
Start by adding the first two equations together... notice the -2y in the first and 2y in the second will cancel.
anonymous
  • anonymous
right...and i got x=1
anonymous
  • anonymous
Add first two together you get 4x=4 X=1 put this value first equation you get 1-2y=-1 Y=1 put these two values of x,y to #3 equaltion you get 2-4+z=-1 Z=1
anonymous
  • anonymous
thnks
anonymous
  • anonymous
Glad to help... looks like you almost had it on your own :)

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