maggiemadrid27 maggiemadrid27
  • 30-10-2017
  • Mathematics
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x-7=11 , 2x+y=19 when using elimination

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adelinekcrace
adelinekcrace adelinekcrace
  • 30-10-2017
x+0=18
2x+y=19 

(-2)x+(-2)0=(-2)18
2x+y=19 

0+y= -17 
2x+ (-17)=19
2x=36

y=-17
x=18
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