brittany41 brittany41

14-03-2017
Mathematics

Answered

i need help solving for x,y and z

i need help solving for x,y and z class=

Verified Answer :

TheHero TheHero

08-04-2017

y = -2x

sub in the other 2

x +2x + z = 6

3x + z = 6 ->(1)

2x -4x - z = 3

-2x - z = 3 -> (2)

sum them

x = 9

y = -2x = -18

z = -2x - 3 = -18 -3 = -21

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