libbyh71199
Answered

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Solve the system

 

-3x+7y=-12

3x+8y=12

Sagot :

Demon
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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