SOLUTION: solve using elimination method: 3x-4y=9 and -3x+2y=9

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Question 804593: solve using elimination method: 3x-4y=9 and -3x+2y=9
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
3 x -4 y = 9 .............1
Total value
-3 x + 2 y = 9 .............2
add (1) & (2)
-2y=18
/2
y=-9
plug y in (1)
3x-4y=9
3x-4(-9)=9
3x+36=9
3x=-27
/3
x=-9