janessa1
janessa1
07-01-2016
Mathematics
contestada
what is -4x+7x=-38 8x+7y=34
Respuesta :
Billymkhoi
Billymkhoi
07-01-2016
-4x+7x= -38
⇒ 3x= -38
⇒ x= -38/3
8x+7y= 34
⇒ 8*(-38/3)+ 7y= 34
⇒ 7y= 406/3
⇒ y= (406/3)/7
⇒ y= 58/3.
The final answer is
x= -38/3, y= 58/3
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