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Mathematics 13 Online
OpenStudy (anonymous):

ist question

OpenStudy (anonymous):

6x-y+3z=14 x+3y-z=-7 3x+3y-4z=-11

OpenStudy (anonymous):

try eliminating the y's

OpenStudy (anonymous):

k

OpenStudy (anonymous):

2x-3z=-4

OpenStudy (anonymous):

now these 6x-y+3z=14 x+3y-z=-7

OpenStudy (anonymous):

nope

OpenStudy (anonymous):

18x -3y +9z = 42 x + 3y -z = -7

OpenStudy (anonymous):

19x+8z=35

OpenStudy (anonymous):

now eq 4&5

OpenStudy (anonymous):

ugh taking forever

OpenStudy (anonymous):

stop complain 2x-3z=-4 19x+8z=35

OpenStudy (anonymous):

i dont know whats next

OpenStudy (anonymous):

want me to give u the value of x to save time?

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

x = 1

OpenStudy (anonymous):

19x+8z=35 use it

OpenStudy (anonymous):

z=2

OpenStudy (anonymous):

correct now, y

OpenStudy (anonymous):

hurry we have 20 mins 4 questions :P

OpenStudy (anonymous):

y=2

OpenStudy (anonymous):

i mean -2

OpenStudy (anonymous):

yay; next question

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