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libbyh71199
libbyh71199 libbyh71199
  • 31-03-2014
  • Mathematics
Answered

Solve the system


 


-3x+7y=-12


3x+8y=12

Verified Answer :

Demon
Demon Demon
  • 31-03-2014

line up both equations according to terms and add
  -3x + 7y= -12
+ 3x + 8y=12 
--------------------------------------
            15y= 0 
y= 0 so plug back that into either equations and get x=4

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